I am trying to wire a new car stereo to my boat (Alpine stereo, 1990 Mariah bow rider). When I pulled the old stereo out, I looked at the wiring harness and it only has 8 wires (+,-, and 6 speaker wires). The odd thing is there are only 6 wires for 4 speakers. I have done some troubleshooting and realized each of the two starboard and port speakers share 3 wires.
For example: Starboard: blue, green, yellow
Troubleshooting results:
Blue and green wires power front speaker.
Blue and yellow wires power front speaker.
Green and yellow wires power rear speaker.
Anyone know how to wire this up to get sound out of both? I'd rather not rip up carpet and floorboards to visually look at the wiring.
Thanks
For example: Starboard: blue, green, yellow
Troubleshooting results:
Blue and green wires power front speaker.
Blue and yellow wires power front speaker.
Green and yellow wires power rear speaker.
Anyone know how to wire this up to get sound out of both? I'd rather not rip up carpet and floorboards to visually look at the wiring.
Thanks