I'm not sure what is going on with the wiring for the radio in my 94 940 - I have found the ignition power, but cannot find the main battery power. pictured below is what appears to be the main harness off of the fuse block, with the red wire being the ignition power, but the I cannot locate the main battery power from this harness with my meter:


main terminal from fuseblock?

there's also another harness on the left side of the driver's footwell that appears to be for the speakers, but also has a dangling red wire that spliced to/from three wires. It does not have voltage at it.

other terminal

so the radio harness looks like it's supposed to be wired to both terminals. the power and front speakers wire to the first terminal; and both front and back speakers wire to the second terminal with the dangling red wire. the front speakers are spliced to run to both terminals.

so my basic question is what color is the wire for the battery voltage? if it's yellow, than the previous installer either replaced it or the wire has a short in it. in any case, any help is appreciated. thanks.

 

A quick google search brought up the factory diagram book for a 95 940

https://www.myvolvolibrary.info/Tech...ction-3-39.pdf

look on page 132 - the green w/red stripe in position 9 in the connector you have in your first picture is 12v, fused by the #26 fuse.

 

Red wire looks like a fuseable link. Could be blown. Try probing above the heat shrink.

 

red wire looks like an aftermarket splice to me.

 

tthe connector over behind the dash was for the separate amplifier most 940's had, and yes, most of the speakers are wired there. if you get a volvo 940 stereo wiring harness from Metra or Scosche or whatever, it shoudl come with two connectors, one for each of those two blocks, that you wire into your car stereo's harness.

 

got it figured out. thanks yall!

 

when I did my 92 740T wagon, I put 6.5" component speakers in the front, with the woofers in the front door panels, and the tweeters installed in the dash speaker places. the crossovers were installed with tie wraps on the bracket that held the OE amplifier (ripped out and tossed). I used a metra/scoche stereo harness, and wired the crossovers to the front main outputs, and the door and dash speaker terminals appropriately. for the dash tweeters, i took the plate that held the original crappy rotted paper speaker and basically scraped off the remainder, then silicone glued my tweeters onto it, wired to the original dash wiring, which back at the stereo was redirected to the crossover speaker outputs.

component speakers with external crossovers really do sound a lot better than the ones that don't have crossovers, even if you don't use a fancy amp. I ran those JL Audio component speakers off my deck's front speaker outputs and for all reasonable adult volume ranges it sounded /great/. sure, the speakers were rated for like 200 watts or something, and I was running them with a 50W "music power' watts per chan deck, but I listen to acoustic music at natural volumes, not ear melting EDM or rock.