Overview Opus OP2 uses Purple Line electrical architecture compliant with NFPA 1192, FMVSS 571, SAE J560, SAE J1889, and FMVSS 108. Wiring employs copper conductors insulated with T90 nylon 75 °C. Diagrams include:
- 7-pin vehicle hookup and external trailer lighting
- Chassis breakaway and auxiliary charging circuits
- Power control unit layout with fused distribution
- Interior combined 12V DC and 110V AC circuits (solar controller, battery charger, compressor, fridge socket, water pumps, LED lighting, heater pads, USB outlets, stereo)
High-resolution versions are in the OP2 Owner’s Manual on the Opus Owner Portal. Modifications require a certified RV technician to maintain warranty and safety compliance.
Key Diagram Summaries
7-Pin Hookup & External Trailer Lighting
- 7-pin flat connector pinout:
- Brown (BR 10 GA): Right turn + brake lights
- Red (R 10 GA): Left turn + brake lights
- Green (GR 14 GA): Tail/marker lights
- Yellow (Y 14 GA): Auxiliary 12V power/charging
- White (W 10 GA): Ground
- Black (BLK 14 GA): Brakes (breakaway circuit)
- Blue (BL 14 GA): Electric brakes
- External lights: Front markers (amber), side markers (amber), rear tail/turn/brake (red), license plate light.
- Breakaway switch interrupts brake power on disconnect.
- Wires routed through frame to 7-pin junction box; compliant with SAE and FMVSS standards.
Power Control Unit & DC Distribution
- Power control unit manages battery input, shore power, solar port, and fused circuits.
- Fuses:
- 35 A: Main power feed (red key switch)
- 15 A: Fridge switch, heater switch
- 10 A: Plug switch, pump switch, lights switch
- 5 A: Stereo
- Loads include: CO/LP detector, voltmeter, ammeter, USB outlets, cigarette lighter (inside/outside), fan, water pump, interior/exterior/kitchen lights, fridge plug, air compressor.
Interior 12V & 110V Combined Wiring
- Marine switch isolates battery input.
- 12V circuits: LED lighting (interior, exterior, kitchen, barrel plug), water pump, fridge socket, fan switch, stereo, USB panel, compressor, momentary switches.
- 110V AC circuits: Shore power inlet → battery charger → 110V outlets (multiple locations).
- Solar port and SAE connector support auxiliary charging.
- Fuse/breaker ratings: 15 A fridge/heater, 10 A pump/lights/plug, 5 A stereo.
- Wire color legend:
- Black (BLK 10 GA): 110V live
- White (W 10 GA): 110V neutral / ground
- Red (R 12 GA): 12V + from battery
- Blue (BL 12 GA light blue): Water pumps
- Yellow (Y 12 GA): Fridge socket + fan
- Green (GR 10 GA): Ground
- Brown (BR 12 GA pink): 12V outlet sockets
- Ground points: White/green wires to chassis.
Troubleshooting Tips
- No 12V power: Verify marine switch ON, 35 A main fuse, power control unit connections.
- No shore power: Confirm battery charger LED, incoming cord continuity, outlet GFCI reset.
- Specific circuit failure: Check labeled fuse (e.g., pump only → 10 A pump fuse).
- Voltage checks: 12.6–14.4 V DC at battery (charging/solar), 110–120 V AC at outlets when shore connected.
Safety Notes
- Disconnect shore power and battery negative before inspection.
- Annual certified RV technician inspection required for warranty.
- All non-current-carrying metal must remain grounded.
