Audio system wiring diagram

1-800-52-VOLVO (1-800-528-6586)

Call Volvo tech support in business hours and they should be able email to You diagram after VIN #.

 

You could just cut and splice the wires. The hookup on a vehicle radio is really simple and basic. The radio should have 1 - 2 "hot" wires, 1 for main power and possibly 1 for memory. The main power wire will be "hot" only with the key on and the other will always be "hot". You will have to use a VOM to find out which one is which. There will also be a wire for ground or you can just run the ground wire from the new radio to just about any metal surface on the truck. Also, you will probably find about 8 wires for the speakers. You can use a "AA" battery to test out which wires are for each speaker. Just touch the battery between 2 wires and listen for a sound from the appropriate speaker.

 

Check this place this place out http://bigrigstereo.com/index.html. They sellinterface plugs for Volvo trucks and heavy duty radio and more.
I hope this helps.

 

Anything can be done, and a lot of decent radios can be adapted to steering wheel controls. Get the harness from the place above, maybe call them and see if they have any tips too. Harness' never match up, every manufacturer, radio and vehicle, is different. That's why they make adapters. When I was in the industry, we had an entire wall dedicated to Metra fitment kits, harnesses and antenna adapters. Buy an Alpine, get the plug in XM module or buy the one with it built in, a steering wheel control adapter, and your harness and be happy. It will sound so much better than a cassette adapter as well.