1994 Volvo 940 Car Audio Wire Diagram - MODIFIEDLIFE 1994 Volvo 940 Car Audio Wire Diagram. Car Radio Battery Constant 12v+ Wire: Yellow Car Radio Accessory Switched 12v+ Wire: Red Car Radio Ground Wire: Black Car Radio Illumination Wire: Light Orange Car Stereo Dimmer Wire: N/A Car Stereo Antenna Trigger Wire: N/A Car Stereo Amp Trigger Wire: N/A Car Stereo Amplifier Location: N/A 1991-93 Volvo 940 Series Car Stereo Wire Colors and Locations 1991-93 Volvo 940 Series Stereo Wiring: Constant 12V+ Yellow : Switched 12V+ Red : Ground: Black : Illumination: Light Orange : Dimmer: n/a : Antenna: Left Rear : Front Speakers: 5 1/4" Doors: Left Front (+) Blue/Yellow : Left Front (-) White : Right Front (+) Gray/White : Right Front (-) Gray : Rear Speakers: 6" x 9" Rear Deck: Left Rear (+) Yellow/Brown : Left Rear (-) Yellow/Green Volvo 940 (1991) - wiring diagrams - audio - Carknowledge volvo 940 â wiring diagram â audio WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market. 1991 Volvo 940 Stereo Wiring Diagram - Wiring Diagram Radio Wiring Diagram Volvo 940 Auto Launch Power Corepilates It Volvo 940 Wiring Diagram Radio Tools Beam Position Ctpellicoleantisolari It Volvo 740 Stereo Wiring Diagram VOLVO 940 1993 - wiring diagrams REX-I Distributor ignition ( DI ) system. ( B 230 F ) List of components. 1/1Battery. 2/2Relay, front foglights USA/CDN. 2/3Regulator DIM-DIP. 2/4Intermittent relay, windshield wipers. 2/5Relay, seat belt reminder/ignition key warning. 2/6Bypass relay 151. RWD - Tutorial for Installing Stereo into Volvo 940 Cut 4 lengths of speaker wire, just over 3.5 feet or a meter long. Split one end of each about 3 inches, then strip the two wires crimp on butt connectors. Cut an inch or so of masking or duct tape and fold it in half over the wire like a tag towards the other end.