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SwitchPros SP-1200 (RCR-Force 12)

Model: RCR-Force 12

Manual: https://www.switchpros.com/wp-content/uploads/RCR-force-12-installation-guide-REV-1.9.pdf

Power Source: 150A breaker from Firewall CONSTANT Bus (fed from AUX battery via 300A master CB + 2/0 AWG forward feed)

Power Wire: 2 AWG, ~2 ft (Firewall CONSTANT Bus to power module — both at firewall cluster)

Power Module Location: Firewall (cabin side, passenger area) — co-located with BODY PDU and Firewall CONSTANT Bus. Module is IP67 / 125°C-rated so wheel well placement is also valid, but firewall mounting minimizes total output wire length since most loads are forward/upper (~58% of outputs).

Control Panel Location: Dash mount (4" L x 3" W x 0.375" H)

Control Cable: Standard 5 ft cable (was 10.5 ft when module was rear-mounted — moving to firewall shortens this significantly)

Ground: 4 AWG to chassis (per manufacturer spec - reference ground only, not load return)

Load Ground Path

The 4 AWG controller ground is for logic/reference only. Load return current flows through individual output grounds to the SwitchPros Ground Bus (1/0 AWG to chassis).

IP Rating: IP67 (both power module and control panel)

Overview

Specifications:

  • 150A total capacity on CONSTANT bus
  • 17 outputs total:
  • 4 outputs @ 35A (high in-rush circuits)
  • 1 output @ 30A (high in-rush)
  • 11 outputs @ 15A (can be combined for larger loads)
  • 1 low-side driver @ 2A

Control Panel Layout

Button Circuit Draw Details Output Pin(s)
1 Roof Lights 17.6A 8x BD XL Sport (Linkable, single circuit) OUTPUT-1
2 Ditch Lights 8A 2x BD LP4 Pro (Driving/Combo Pattern) OUTPUT-2
3 Fog Light 6A 1x BD S8 10" (Amber, Wide Cornering) OUTPUT-3
4 Dome Lights 2A 4x KC Cyclone V2 (manual + door-triggered) OUTPUT-4
5 Interior LEDs 5A MLC-RW controller (speaker + footwell RGB) OUTPUT-5
6 Rock Lights 3A 6x KC Cyclone V2 Lights OUTPUT-6
7 Chase Light 1A BD RTL-S 30" (Amber chase mode) OUTPUT-7
8 Navigation 2A Garmin Tread 2 - Overland Edition GPS OUTPUT-8
9 Front Locker 2A ARB Locker (see Air System) OUTPUT-17 (low-side)
10 Rear Locker 2A ARB Locker (see Air System) OUTPUT-10
11 Compressor 15A ARB Twin Compressor (see Air System) OUTPUT-11
12 Rear Work Lights 5A 2x BD S1 Black (Above License Plate) OUTPUT-12

Notes:

  • Button 4: Dome lights have dual control - manual button OR door-triggered via TRIGGER-1
  • Driver door switch + Passenger door switch (wired in parallel) → TRIGGER-1 → OUTPUT-4
  • Either door opening or Button 4 press activates dome lights
  • Button 7: RTL-S amber chase function only - brake/running/work functions powered separately
  • Button 11: OUTPUT-11 provides control signal to ARB compressor (main power is separate: CONSTANT bus → dual 60A fuses → compressor)
  • Cargo Light: Not assigned to button - controlled by rear rocker switch via TRIGGER-2 → OUTPUT-13 (power source conflict with BODY PDU CB20 — see ⚠️ TBD #147)
  • Total lighting draw if all on simultaneously: 43.6A (within 150A capacity)

Wiring Pinout

20-Pin Harness Connector

Pin Label Color Gauge Max Load Assigned Circuit Load Notes
1 OUTPUT-5 GREEN 14 AWG 15A Interior LEDs (MLC-RW controller) 5A
2 OUTPUT-6 BLUE 14 AWG 15A Rock Lights 3A
3 IGNITION LT BLUE - - Connect to ignition signal - For auto-off features
4 LIGHTS WHITE - - Connect to parking lights - For DRL integration
5 OUTPUT-7 PURPLE 14 AWG 15A Chase Light (amber) 1A RTL-S amber chase function only
6 OUTPUT-8 GREY 14 AWG 15A Navigation (Garmin Tread 2) 2A
7 TRIGGER-1 PINK - - Door switches (driver + passenger) - Triggers OUTPUT-4 (dome lights) when doors open
8 TRIGGER-2 PINK - - Rear cargo rocker switch - Triggers OUTPUT-13 (cargo light)
9 OUTPUT-9 WHITE 14 AWG 30A (2x15A) SPARE (can combine 9+10) -
10 OUTPUT-9B WHITE 14 AWG - SPARE (fused with 9) -
11 OUTPUT-10 TAN 14 AWG 15A Rear Locker 2A
12 OUTPUT-11 BROWN 14 AWG 15A Compressor control 15A Control signal to compressor
13 OUTPUT-12 RED 14 AWG 15A Rear Work Lights 5A
14 GROUND BLACK - - Direct to battery negative - Critical - direct connection
15 OUTPUT-13 ORANGE 14 AWG 15A Cargo Light 5A Triggered by rear rocker switch (TRIGGER-2)
16 OUTPUT-14 YELLOW 14 AWG 15A SPARE -
17 TRIGGER-3 PINK - - ARB pressure switch - Auto compressor control
18 OUTPUT-17 LT GREEN - 2A Front Locker (low-side) 2A Low-side switch only
19 OUTPUT-15 GREEN/BLACK 14 AWG 15A SPARE -
20 OUTPUT-16 BLUE/BLACK 14 AWG 15A SPARE -

4-Pin Harness (High Current Outputs)

Pin Label Color Gauge Max Load Assigned Circuit Load Notes
1 OUTPUT-1 BROWN 10AWG 35A Roof Lights (8x) 17.6A
2 OUTPUT-2 RED 10AWG 35A Ditch Lights 8A
3 OUTPUT-3 ORANGE 10AWG 35A Fog Light 6A
4 OUTPUT-4 YELLOW 10AWG 35A Dome Lights 2A

Power and Ground Connections

See AUX Battery Distribution for source battery and Firewall CONSTANT Bus for downstream distribution.

  • Power: AUX battery+ → 300A master CB → 2/0 AWG forward (~13 ft) → Firewall CONSTANT Bus → 150A CB → SwitchPros power module
  • Ground (logic reference): 4 AWG wire from SwitchPros power module → chassis ground at firewall (short run, per manufacturer spec)
  • Load returns: Each output's ground wire returns to the SwitchPros Ground Bus (Blue Sea 2105 MaxiBus), co-located with the power module at the firewall

Trigger Input Assignments

TRIGGER-1: Door Switches → Dome Lights

Switch Type: Factory Jeep TJ/LJ door jamb plunger switch (normally open, closes to ground when door opens)

Wiring:

Factory Driver Door Plunger (NO) ──┬──→ TRIGGER-1 (Pin 7, PINK)
Factory Passenger Door Plunger (NO)─┘

Wire Routing: - Driver door: Door jamb → under dash → firewall SwitchPros (short run) - Passenger door: Door jamb → under dash → firewall SwitchPros (short run) - Wire gauge: 18 AWG (trigger signal only, no current load)

Configuration:

  • Program Button 4 to control OUTPUT-4 OR TRIGGER-1 → OUTPUT-4

Note: Rear tailgate replaced factory rear door - no rear door switch needed

TRIGGER-2: Rear Rocker Switch → Cargo Light

Physical rocker switch mounted in rear cargo area.

Wiring:

Rear Cargo Rocker Switch (SPST) → TRIGGER-2 (Pin 8, PINK)

Configuration:

  • Program TRIGGER-2 → OUTPUT-13 (cargo light)
  • Switch type: SPST rocker or toggle switch

TRIGGER-3: Air Pressure Switch → Auto Compressor Control

ARB air tank pressure switch automatically activates compressor to maintain tank pressure between 135-150 PSI.

Wiring:

ARB Pressure Switch (180901) → TRIGGER-3 (Pin 17, PINK)

Configuration:

Program TRIGGER-3 to activate compressor when tank pressure drops below 135 PSI:

SwitchPros Logic:

  • TRIGGER-3 OR Button 11 → OUTPUT-11 (compressor)
  • When tank pressure < 135 PSI: TRIGGER-3 closes → OUTPUT-11 activates → compressor runs
  • When tank pressure = 150 PSI: TRIGGER-3 opens → OUTPUT-11 deactivates → compressor stops
  • Manual override: Button 11 can force compressor on regardless of tank pressure

Signal Source:

  • ARB Pressure Switch model 180901 (cut-in: 135 PSI, cut-out: 150 PSI)
  • Mounted on air manifold under passenger seat
  • Low current signal wire (18 AWG from manifold under passenger seat to SwitchPros TRIGGER-3 at firewall — short run)

Related Documentation:

  • See Air System for complete ARB compressor, tank, and pressure switch specifications

Outstanding Items

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Build Tasks

Check-off items only. Pin assignments and wire gauges live in the Wiring Pinout section above; controller mounting, power feed, and ground bus install are tracked in the Power Systems Checklist.

Triggers & Programming:

  • Confirm ignition signal → SwitchPros Pin 3 (IGNITION)
  • Determine parking-lights signal source for Pin 4 (LIGHTS) for DRL integration
  • Order control panel cable (power module to dash)
  • Confirm driver + passenger door switches → TRIGGER-1
  • Program Button 4: OUTPUT-4 OR TRIGGER-1 → dome lights
  • Install rear cargo rocker switch → TRIGGER-2 (determine tailgate-accessible location)
  • Program TRIGGER-2 → OUTPUT-13 (cargo light)
  • Confirm cargo light wiring (OUTPUT-13) — power-source conflict pending ⚠️ TBD #147
  • Confirm ARB pressure switch → TRIGGER-3
  • Program TRIGGER-3 OR Button 11 → OUTPUT-11 (compressor auto/manual)
  • Test automatic pressure control (compressor on/off at setpoints)
  • Assign spare outputs: OUTPUT-9, 14, 15, 16