Behind 2nd Row Panel
Behind 2nd Row Power Distribution Panel (As-Built)¶
Location: Mounted to AirDown GearUp drawer system 80/20 aluminum extrusion legs behind 2nd row seat Mounting Method: T-slot with standoffs Access: From cargo area Purpose: Central power distribution and communications hub for interior electrical systems
Panel Components (All Installed)¶
1. Interior SPOD BantamX (documented above in Power Distribution section) - 6 circuits for interior power, communications, and accessories - Mounted with T-slot standoffs to 80/20 extrusion - Status: ✅ Physically installed, ⚠️ Wiring in progress
2. RECOIL MPG4 4-Way Mini-ANL Fused Distribution Block - Model: RECOIL MPG4 with integrated ground block - Input: 2x 0/2/4 AWG (positive + negative/ground) - Output: 4x 4/8 AWG (positive + negative per output) - Fuses: Mini-ANL fuses (amperage per circuit TBD) - Purpose: High-current primary distribution for behind-2nd-row panel - Power Source: TBD - likely from secondary battery via heavy gauge feed - Output Distribution: TBD - likely feeds: - Output 1: Interior SPOD BantamX input - Output 2: Blue Sea fuse block input - Output 3: 12-position fuse block input - Output 4: Direct to high-current load or spare - Status: ✅ Installed, ⚠️ Wiring details need documentation - Product: https://a.co/d/9gFExm8
3. 12-Position Fused Distribution Block - Type: Standard blade fuse distribution block (ATO/ATC fuses) - Circuits: 12 circuits available - Purpose: Medium-current accessory distribution - Power Source: Via RECOIL MPG4 output (4/8 AWG feed) - Circuit Assignments: TBD - need documentation - Status: ✅ Installed, ⚠️ Circuit assignments need documentation - Product: https://a.co/d/9gFExm8
4. Blue Sea Systems 5032-BSS STBlade Dual Bus Fuse Block - Model: Blue Sea 5032-BSS - Circuits: 12 circuits (dual bus bar configuration) - Bus Configuration: - Group A: Key-switched power (via MSD relay with key-on trigger - Yellow 20 AWG TXL) - Group B: Always-on power (direct from RECOIL MPG4) - Features: - STBlade fuse type - Integrated negative ground bus - Protective cover - Professional marine-grade quality - Purpose: Clean fuse block for accessories with dual power sources - Power Sources: - Group A: Via MSD relay (key-switched via Yellow 20 AWG trigger) - Group B: Direct from RECOIL MPG4 output (4/8 AWG feed - always on) - Known Circuit Assignments: - Group A (Key-Switched, Circuits 1-6): - Circuit 1: USB-C PD Socket 1 (7.5A) - Violet - 📋 Planned - Circuit 2: Yaesu FTM-510 Radio (15A) - Red - ✅ Connected - Circuit 3: USB-C PD Socket 2 (7.5A) - Gray - 📋 Planned - Circuit 4: Rigid Under Dash Module (Plug A Pin 4) (5A) - Red - ✅ Connected - Circuit 5: Uniden R8 Radar Detector (3A) - White - ✅ Connected - Circuit 6: Available - Group B (Always-On, Circuits 7-12): - Circuit 7: LED Safe Light (console vault) (2A) - Green - ✅ Connected - Circuit 8: Available - Circuit 9: Available - Circuit 10: Available - Circuit 11: Available - Circuit 12: Available - Status: ✅ Installed and operational - Product: https://a.co/d/30jbhCQ
5. MSD 75643-HC Solid State Relay Modules (2x)
MSD1 - Power Distribution & Lighting - Model: MSD 75643-HC (4-channel solid state relay) - Channels: 4 relays @ 35A each (140A total switching capacity) - Type: Solid state (no mechanical contacts, silent operation, long life) - Purpose: Key-switched power distribution and lighting control - Channel Assignments (AS-BUILT): - Channel 1: Blue Sea Group A key-switched power - Trigger: Yellow 20 AWG TXL key-on signal wire - Load: Blue Sea fuse block Group A bus (key-switched circuits 1-6) - Purpose: Provides ignition-switched power to Group A circuits - Channel 2: [Available/Spare] - Status: Not currently assigned - Channel 3: [Available/Spare] - Status: Not currently assigned - Channel 4: Rigid Adapt 40" light bar - Trigger: Blue wire from Rigid Under Dash Module Connector C Pin 1 - Load: High-current power to light bar on Gobi roof rack (30A via RECOIL MPG4) - Purpose: Allows Rigid controller to safely switch 30A light bar - Status: ✅ Installed and wired - Product: https://a.co/d/fP5Qm7p
MSD2 - Seat Heaters (Dedicated) - Model: MSD 75643-HC (4-channel solid state relay) - Channels: 4 relays @ 35A each (140A total switching capacity) - Type: Solid state (no mechanical contacts, silent operation, long life) - Purpose: 2nd row seat heater control (2 relays per seat for Hi/Lo) - Channel Assignments (PLANNED - 2-Relay Per Seat Design): - Channel 1: Passenger seat LO - Trigger: Pink 20 AWG TXL from console switch - Load: Via 2Ω resistor to passenger seat heating element - Channel 2: Passenger seat HI - Trigger: Red 20 AWG TXL from console switch - Load: Direct to passenger seat heating element - Channel 3: Driver seat HI - Trigger: Blue 20 AWG TXL from console switch - Load: Direct to driver seat heating element - Channel 4: Driver seat LO - Trigger: Light Blue 20 AWG TXL from console switch - Load: Via 2Ω resistor to driver seat heating element - Control Sources: - Center console hi/lo SPDT switches (low-current signal) - Yellow key-on wire enables relay operation - Status: 📋 Planned - not yet installed - Product: https://a.co/d/fP5Qm7p
Rigid Adapt 40" Light Bar System¶
Model: Rigid Adapt 40" (SKU 240413) Location: Gobi roof rack - front Status: ✅ Installed, wiring in progress
System Components¶
| Component | Location | Purpose |
|---|---|---|
| Light Bar | Gobi roof rack (front) | 40" adaptive beam light bar |
| Under Dash Module | Behind 2nd row panel | Controller brain, relay trigger output |
| Dash Controller | Center console area | Mode selection, beam pattern control |
| Wiring Harness | Roof to behind 2nd row | Power and data to light bar |
Wiring Architecture¶
Power Flow Diagram:
┌─────────────────────────────────────────────────────────────────────┐
│ CONTROLLER POWER (Low Current - 5A) │
├─────────────────────────────────────────────────────────────────────┤
│ │
│ Blue Sea Group A Circuit 4 (5A fuse, key-switched) │
│ │ │
│ │ Red wire │
│ ▼ │
│ Under Dash Module - Accessory Plug (Connector A) Pin 4 │
│ │ │
│ ▼ │
│ Under Dash Module (powers controller electronics) │
│ │ │
│ ▼ │
│ Connector C Pin 1 (Blue wire) ──► MSD1 Channel 4 Trigger │
│ │
└─────────────────────────────────────────────────────────────────────┘
┌─────────────────────────────────────────────────────────────────────┐
│ LIGHT BAR POWER (High Current - 30A) │
├─────────────────────────────────────────────────────────────────────┤
│ │
│ RECOIL MPG4 Distribution Block │
│ │ │
│ │ 4/8 AWG feed (fused) │
│ ▼ │
│ MSD1 Power Input (powers all 4 relay channels) │
│ │ │
│ ▼ │
│ MSD1 Channel 4 (triggered by Connector C Pin 1 Blue wire) │
│ │ │
│ │ When triggered by Under Dash Module │
│ ▼ │
│ MSD1 Channel 4 Output (Term 87) │
│ │ │
│ │ 30A to light bar │
│ ▼ │
│ Light Bar (Red +) │
│ │
│ Light Bar (Black -) ──────────────────► Ground │
│ Light Bar (White) ────────────────────► Connector C Pin 2 (Data) │
│ │
└─────────────────────────────────────────────────────────────────────┘
Under Dash Module Connections¶
Connector A - Accessory Plug (4-pin): | Pin | Wire Color | Function | Connection | Status | |-----|------------|----------|------------|--------| | 1 | White | Backlighting LED Trigger | Not connected (using dash controller) | — | | 2 | Blue/White | Projecting LED Trigger | Not connected (using dash controller) | — | | 3 | Gray | GPS Input | Optional - for adaptive beam mode | 📋 Optional | | 4 | Red/White | Ignition/Battery Input | Blue Sea Group A Circuit 4 (5A) | ✅ Connected |
Connector B - Dash Controller (4-pin): | Pin | Wire Color | Function | Status | |-----|------------|----------|--------| | 1 | Red | 3.3V DC Power | Pre-terminated, plug-in | | 2 | Blue | Receive | Pre-terminated, plug-in | | 3 | Yellow | Transmit | Pre-terminated, plug-in | | 4 | Black | Ground | Pre-terminated, plug-in |
Connector C - Light Bar (3-pin): | Pin | Wire Color | Function | Connection | Status | |-----|------------|----------|------------|--------| | 1 | Blue | Relay Trigger | MSD1 Channel 4 Trigger Input | ✅ Connected | | 2 | White | Data | Light bar data line | ✅ Connected | | 3 | Black | Ground | Chassis ground | ✅ Connected |
Connector D - Bluetooth: Coming soon (not used)
Light Bar Wire Connections¶
| Light Bar Wire | Harness Wire | Function |
|---|---|---|
| Red | Red | +VDC Main Power (from MSD1 Ch4 output) |
| Black | Black | Ground |
| White | White | Data (to Connector C Pin 2) |
Key Points¶
- Dual Key Protection: Light bar only operates when:
- Ignition is ON (MSD1 Ch1 powers Blue Sea Group A → Circuit 4 powers Under Dash Module)
-
Dash controller activates the light (triggers MSD1 Ch4 via Connector C Pin 1)
-
Controller vs Light Bar Power Separation:
- Controller power: 5A from Blue Sea Circuit 4 (low current for electronics)
-
Light bar power: 30A from RECOIL MPG4 via MSD1 Ch4 (high current for LEDs)
-
Dash Controller Features:
- 8 selectable beam patterns (flood to spot)
- Adaptive mode (requires GPS module - sold separately)
- RGB-W backlighting control
-
2 user-defined presets
-
Documentation: See
modifications/exterior/RIGID_Adapt_Instructions.pdffor complete installation manual
Seat Heater Control Wiring (AS-BUILT)¶
Overview: - 2nd row seat heaters controlled via hi/lo switches in back of center console - Signal wires run ~7 feet from center console to MSD relay behind 2nd row seat - Key-on trigger wire ensures heaters only operate with ignition on
Signal Wire Specifications: - Wire Type: TXL automotive wire (thin-wall insulation, oil/abrasion resistant, 125°C rated) - Wire Gauge: 20 AWG (stranded copper) - Wire Source: Wire Barn 14-color TXL assortment (https://www.wirebarn.com/14-Pack-of-18-Gage-TXL-Wire) - Routing Distance: ~7 feet (center console → behind 2nd row seat) - Total Signal Wires: 5 wires - 2x Hi signal (one per seat) - 2x Lo signal (one per seat) - 1x Key-on trigger (ignition power for relay enable)
Wire Color Assignments (AS-BUILT): - Passenger Seat Hi Signal: Red (20 AWG TXL) - Passenger Seat Lo Signal: Pink (20 AWG TXL) - Driver Seat Hi Signal: Blue (20 AWG TXL) - Driver Seat Lo Signal: Light Blue (20 AWG TXL) - Key-On Trigger: Yellow (20 AWG TXL)
Color Logic: Passenger = red family, Driver = blue family, Hi = darker shade, Lo = lighter shade, Key-on = yellow (automotive standard)
Wire Gauge Analysis:
| Specification | 22 AWG | 20 AWG (Selected) |
|---|---|---|
| Wire diameter | 0.0253" (0.644mm) | 0.0319" (0.812mm) |
| Cross-section area | 0.205 mm² | 0.326 mm² (60% more copper) |
| Resistance/1000ft | 16.14 Ω | 10.15 Ω (37% less resistance) |
| Chassis current rating | 0.92A | 1.5A (63% more capacity) |
| Voltage drop @ 50mA / 7ft | 0.0057V (0.047%) | 0.0036V (0.030%) |
| Mechanical durability | Less durable | More durable (26% thicker) |
| Ease of crimping | Harder (smaller) | Easier (standard automotive size) |
Why 20 AWG Selected: - Signal wires carry minimal current (<100mA) - both 20 AWG and 22 AWG electrically adequate - 20 AWG offers superior mechanical durability for 7-foot routing through vehicle interior - Better resistance to vibration, abrasion, and flexing over time - Easier to strip, crimp, and terminate (standard automotive crimp terminals) - OEM automakers typically use 20 AWG as minimum for signal wires - Voltage drop negligible at signal currents (0.002V difference vs. 22 AWG)
Connection Details: - Passenger Seat Hi Signal: Center console switch → MSD Relay Channel 2 trigger (hi input) - Passenger Seat Lo Signal: Center console switch → MSD Relay Channel 2 trigger (lo input) - Driver Seat Hi Signal: Center console switch → MSD Relay Channel 3 trigger (hi input) - Driver Seat Lo Signal: Center console switch → MSD Relay Channel 3 trigger (lo input) - Key-On Trigger: Ignition-switched 12V → MSD relay enable (ensures heaters only work with key on)
High-Current Load Wiring: - Note: Signal wires (20 AWG) only control the MSD relay - Load wires (heating element power) are separate high-current circuits (likely 12-14 AWG) - Load wiring: Fuse block → MSD relay high-current terminals → seat heating elements
Installation Notes: - Use proper automotive crimped connections (not solder) - Route wires away from sharp edges and heat sources - Use adhesive-lined heat shrink on all connections - Secure with zip ties at regular intervals - Label all wires at both ends - Test continuity before final installation
Status: ✅ Installed and operational
Seat Heater Wiring Design - 2-Relay Configuration (Detailed)¶
Architecture: Two MSD relay channels per seat (one for HI, one for LO) keeps all high-current wiring behind 2nd row. Only low-current signal wires (20 AWG) run to console switches.
Key Advantage: Zero high current flows through console switches - only signal wires (<100mA) run 7 feet to/from switches.
Driver Seat - 2-Relay Design (MSD Ch3 + Ch4)¶
Signal Circuit (Console → MSD Relays Behind 2nd Row):
CENTER CONSOLE SPDT SWITCH:
Key-On +12V (20 AWG) --> Terminal 2 (Common)
|
+---------------+---------------+
| |
Terminal 1 (HI) Terminal 3 (LO)
| |
[BLUE 20 AWG TXL] [LT BLUE 20 AWG TXL]
| |
[7 feet to relay] [7 feet to relay]
| |
V V
MSD Ch3 Trigger MSD Ch4 Trigger
(activates HI) (activates LO)
Total wires at console: 3 wires (all 20 AWG, <100mA signal only)
Power Circuit (Behind 2nd Row Seat - All High Current Stays Here):
BEHIND 2ND ROW SEAT:
Fuse Block +12V (10A fuse)
|
|--[12 AWG split to both channels]
| |
V V
MSD Ch3 Input MSD Ch4 Input
(HI relay) (LO relay)
| |
MSD Ch3 Output MSD Ch4 Output
(direct 12V) (12V through resistor)
| |
| [2Ω 25W Resistor]
| (mounted to metal)
| |
+---------------+-------------------+
|
[12 AWG, 2-3 ft]
|
V
Heater RED wire (driver seat)
|
Heater Element
|
BLACK wire → Ground
Connection Summary - Driver Seat:
| Location | Connection | Wire | Gauge | Current | Notes |
|---|---|---|---|---|---|
| Console Switch | Terminal 1 (HI) | BLUE TXL | 20 AWG | <100mA | To MSD Ch3 trigger, 7 ft |
| Terminal 2 (Common) | Any color | 20 AWG | <100mA | From Key-On 12V | |
| Terminal 3 (LO) | LT BLUE TXL | 20 AWG | <100mA | To MSD Ch4 trigger, 7 ft | |
| MSD Ch3 (HI) | Input (Term 30) | RED/BLACK | 12 AWG | 4A | From fuse block |
| Trigger | BLUE TXL | 20 AWG | <100mA | From console Terminal 1 | |
| Output (Term 87) | RED | 12 AWG | 4A | Direct to heater, 2-3 ft | |
| MSD Ch4 (LO) | Input (Term 30) | RED/BLACK | 12 AWG | 2.4A | From fuse block |
| Trigger | LT BLUE TXL | 20 AWG | <100mA | From console Terminal 3 | |
| Output (Term 87) | RED | 12 AWG | 2.4A | Via 2Ω resistor to heater | |
| Heater | RED wire | Merged | 12 AWG | Variable | From both Ch3 & Ch4 outputs |
| BLACK wire | Ground | 12 AWG | Variable | To chassis ground |
Passenger Seat - 2-Relay Design (MSD Ch1 + Ch2)¶
Signal Circuit:
CENTER CONSOLE SPDT SWITCH:
Key-On +12V (20 AWG) --> Terminal 2 (Common)
|
+---------------+---------------+
| |
Terminal 1 (HI) Terminal 3 (LO)
| |
[RED 20 AWG TXL] [PINK 20 AWG TXL]
| |
[7 feet to relay] [7 feet to relay]
| |
V V
MSD Ch2 Trigger MSD Ch1 Trigger
(activates HI) (activates LO)
Power Circuit (Behind 2nd Row):
Fuse Block +12V (10A fuse)
|
|--[12 AWG split]
| |
MSD Ch2 Input MSD Ch1 Input
(HI relay) (LO relay)
| |
MSD Ch2 Output MSD Ch1 Output
(direct 12V) (via 2Ω resistor)
| |
+---------------+-------------------+
|
Heater Element (passenger seat)
Connection Summary - Passenger Seat:
| Location | Connection | Wire | Gauge | Notes |
|---|---|---|---|---|
| Console Switch | Terminal 1 (HI) | RED TXL | 20 AWG | To MSD Ch2 trigger, 7 ft |
| Terminal 2 (Common) | Any color | 20 AWG | From Key-On 12V | |
| Terminal 3 (LO) | PINK TXL | 20 AWG | To MSD Ch1 trigger, 7 ft | |
| MSD Ch2 (HI) | Trigger | RED TXL | 20 AWG | From console Terminal 1 |
| Output | RED | 12 AWG | Direct to heater | |
| MSD Ch1 (LO) | Trigger | PINK TXL | 20 AWG | From console Terminal 3 |
| Output | RED | 12 AWG | Via 2Ω resistor to heater |
Complete 2-Seat MSD Channel Allocation¶
| MSD Channel | Seat | Mode | Current | Trigger Wire | Power Path |
|---|---|---|---|---|---|
| Ch1 | Passenger | LO | 2.4A | PINK 20 AWG | Via 2Ω resistor |
| Ch2 | Passenger | HI | 4A | RED 20 AWG | Direct (no resistor) |
| Ch3 | Driver | HI | 4A | BLUE 20 AWG | Direct (no resistor) |
| Ch4 | Driver | LO | 2.4A | LT BLUE 20 AWG | Via 2Ω resistor |
Note: This configuration uses all 4 MSD relay channels for seat heaters. Rigid Adapt light bar (previously on Ch1) requires relocation to different relay.
Operation - 2-Relay Design¶
Switch in HI Position (Terminal 1): 1. Key-On 12V flows to switch Terminal 2 (Common) 2. Switch connects Terminal 2 to Terminal 1 3. Signal wire (BLUE or RED) sends 12V to HI relay trigger 4. HI relay activates: Direct 12V → Heater (no resistor) 5. Full 4A @ 12V = 48W → 127°F 6. LO relay remains off (no signal)
Switch in LO Position (Terminal 3): 1. Key-On 12V flows to switch Terminal 2 (Common) 2. Switch connects Terminal 2 to Terminal 3 3. Signal wire (LT BLUE or PINK) sends 12V to LO relay trigger 4. LO relay activates: 12V → 2Ω Resistor → Heater 5. Reduced 2.4A @ ~8V = 28W → ~95°F 6. HI relay remains off (no signal)
Parts List - Per Seat (2-Relay Design)¶
| Qty | Part | Specification | Location |
|---|---|---|---|
| 1 | SPDT Switch | V6D2UHNB (Carling V-Series, 20A rated, handles signal only) | Center console |
| 1 | Power Resistor | 2Ω 25W (aluminum housed wirewound) | Behind 2nd row |
| 1 | Rostra Heater Kit | 250-1900 (heating element in seat) | Seat cushion |
| 7 ft | HI Signal Wire | BLUE or RED 20 AWG TXL | Console → HI relay |
| 7 ft | LO Signal Wire | LT BLUE or PINK 20 AWG TXL | Console → LO relay |
| 3 ft | Console Power | 20 AWG (any color) | Key-On 12V source |
| 10 ft | High Current Wire | 12 AWG | Fuse → relays → heater |
| 2 | MSD Channels | 35A solid state relay each | Behind 2nd row panel |
| 1 | Fuse | 10A blade fuse | Fuse block |
| 1 | Junction/Splice | Butt connector or solder | Merge HI/LO outputs |
Total for 2 seats: Double all quantities, uses all 4 MSD channels
V6D2UHNB Switch Pinout (Carling V-Series SPDT)¶
Wiring Diagram: modifications/interior/V6D2UHNB_Switch_Wiring_Diagram.pdf
Source: OTRATTW Wiring Diagrams
Switch Circuit (SPDT - 3 positions: HI / OFF / LO):
| Pin | Function | Wire Color | Connection |
|---|---|---|---|
| 1 | Outgoing (HI position) | Red (Pax) / Blue (Drv) | MSD HI relay trigger |
| 2 | Incoming (Common) | Yellow | Key-on 12V source |
| 3 | Outgoing (LO position) | Pink (Pax) / Lt Blue (Drv) | MSD LO relay trigger |
Lamp Circuit (Dual Independent Indicator Lights):
| Pin | Function | Purpose |
|---|---|---|
| 7 | Upper light (-) | Ground for upper indicator |
| 8 | Upper light (+) | Wire to HI relay output for HI-active indication |
| 9 | Lower light (-) | Ground for lower indicator |
| 10 | Lower light (+) | Wire to LO relay output for LO-active indication |
Note: Both indicator lights are independent of switch operation. Wire them to relay outputs to show which mode (HI/LO) is currently active.
Advantages of 2-Relay Design¶
✅ Zero high current at console switches - Switches handle only signal current (<100mA) - No voltage drop concerns over 7-foot runs - Switch longevity maximized (no high-current arcing)
✅ All high-current wiring stays behind 2nd row - Short 2-3 foot runs minimize voltage drop - Professional power distribution architecture - Easier to troubleshoot and maintain
✅ Resistor cooling optimized - Mounted behind 2nd row with good airflow - Bolt to metal panel/bracket as heatsink - Away from console plastics and upholstery
✅ Solid state reliability - MSD relays have no mechanical contacts to wear - Silent operation (no clicking) - Long service life
✅ Clean signal/power separation - Follows OEM automotive design practices - Easier to troubleshoot (signal vs. power issues) - Safer installation
Disadvantages of 2-Relay Design¶
❌ Uses 2 MSD channels per seat (4 total) - All MSD relay channels consumed by seat heaters - Rigid Adapt light bar must relocate to different relay - No spare channels available
❌ More complex wiring - Requires splitting power to two relays per seat - Need junction to merge HI/LO relay outputs - More connections to make and label
❌ More wire required - Separate signal wires for HI and LO per seat - Additional 7 feet of 20 AWG per seat
Installation Notes - 2-Relay Design¶
Resistor Mounting: - Mount 2Ω 25W resistors to metal surface behind 2nd row - Use thermal paste between resistor case and mounting surface - Bolt securely (metal surface acts as heat sink) - Ensure good airflow around resistors - Resistors will reach 150-180°F during LO operation - Keep away from plastic, carpet, wiring insulation
Wire Routing: - Route all 4 signal wires (2 per seat) from console through carpet edge - Use existing harness routing paths where possible - Secure signal wires with zip ties every 12-18 inches - Keep signal wires away from high-current power wires - Label all wires at both ends with wire markers
Junction Connections: - Use butt connectors or solder joints to merge HI/LO relay outputs - Insulate all junctions with adhesive-lined heat shrink tubing - Keep junctions accessible for troubleshooting - Label junctions clearly (e.g., "Driver Seat HI/LO Merge")
Testing Procedure: 1. Test HI relay independently (disconnect LO relay output) 2. Verify heater reaches 127°F in ~5 minutes 3. Test LO relay independently (disconnect HI relay output) 4. Verify heater reaches 90-100°F in ~8 minutes 5. Verify switch toggles between relays correctly 6. Check resistor temperature (should stabilize 150-180°F) 7. Measure voltage at heater: 12V (HI), 7-8V (LO) 8. Verify no voltage drop in signal wires 9. Test both seats independently and simultaneously 10. Verify no interference with other MSD relay circuits
Safety Checks: - Verify all fuses properly sized (10A per seat heater) - Confirm resistors securely mounted with thermal management - Check all crimps and connections for proper tension - Verify no exposed conductors or bare wire - Test ground connections for continuity - Confirm Key-On trigger works (heaters off when key off)
Status: 📋 Planned design - not yet implemented
Wire Inventory - TXL Automotive Wire (On Hand)¶
Source: Wire Barn 14-Color TXL Assortment Packs - Product Link: https://www.wirebarn.com/14-Pack-of-18-Gage-TXL-Wire
Available Gauges: - 14 AWG TXL (25 ft per color, 14 colors) - 18 AWG TXL (25 ft per color, 14 colors) - 20 AWG TXL (25 ft per color, 14 colors) - 22 AWG TXL (25 ft per color, 14 colors)
Available Colors (All Gauges): 1. Black 2. Red 3. Blue 4. Green 5. Yellow 6. Brown 7. White 8. Orange 9. Pink 10. Violet 11. Gray 12. Tan 13. Light Blue (LT Blue) 14. Light Green (LT Green)
Wire Specifications: - Type: TXL (Thin-Wall Cross-Linked) - Insulation: Cross-linked polyethylene - Temperature Rating: 125°C (257°F) - Voltage Rating: 50V DC - Features: Oil resistant, abrasion resistant, moisture resistant - Construction: Stranded copper conductor - Application: Automotive low-voltage wiring
Usage Guidelines: - 14 AWG: High-current loads (20-30A), power distribution feeds - 18 AWG: Medium-current accessories (10-15A), switched power circuits - 20 AWG: Signal wires, low-current switches, relay triggers (<5A) - 22 AWG: Signal-only applications, very low current (<2A)
Notes: - 25 feet per color provides enough wire for most single-run applications - Order additional packs for large projects or specific color needs - Keep wire organized by gauge and color for efficient project execution
6. WLED Addressable LED Controller - Type: WLED controller for addressable LED strips - Location: Behind 2nd row panel (mounted to board with other components) - Purpose: Control system for interior ambient and accent lighting - LED Zones (6 total - all installed and operational): 1. Cup Holder LEDs - Center console 2. Overhead Console Ambient LEDs (2x) - Overhead console 3. Floorboard Front LEDs - Driver and passenger front footwells 4. Floorboard Rear LEDs - Behind 2nd row seat footwells 5. Door Panel Ambient Lights (4x) - All four interior door handles 6. Additional Zone: TBD - Power Source: TBD - likely from Blue Sea fuse block or 12-position fuse block - Data Connection: Addressable LED data lines to all zones - Control Method: WiFi/app control via WLED software - Wire Routing: Behind 2nd row → various cabin locations (under seats, to doors, overhead) - Status: ✅ Installed and operational (6 LED zones active)
7. Yaesu FTM-510 Ham Radio (Separation Kit Installation) - Model: Yaesu FTM-510 (C4FM/FM Dual Band Mobile Transceiver) - Configuration: Radio body mounted behind 2nd row, head unit and mic remoted to front - Purpose: Amateur radio communications (VHF/UHF dual band) - Power Consumption: ~15A transmit, 1-2A receive - Power Source: Blue Sea Group A Circuit 3 (key-switched, 15A fuse) - ✅ Connected - Remote Locations: - Head Unit: Overhead console (sunglasses holder location) - Radio Body: Electronics board behind 2nd row - Microphone: Jack in forward center console (planned) - Antenna Routing: Rear bumper mount (per Wire Routing Map) - Status: ✅ Installed and wired to key-switched power
Behind 2nd Row Panel - Information Needed¶
To complete documentation, need answers to: 1. What are the RECOIL MPG4 input power sources? (battery, wire gauge, fusing) 2. What exactly does each of the 4 RECOIL MPG4 outputs feed? 3. What is each circuit on the 12-position fuse block being used for? 4. How are the MSD relay channels wired (triggers and loads)?
See RFI.md for research tasks to document this panel completely.