Installing a new head unit and speakers in this 240. The wire harness I bought to adapt to the factory adapter is the squarish one that I've used before on my other 240.

This car however has a different type of adapter. It's the same amount of wires but instead of being square its very thin and rectangular. It also has a ground wire that screws in and a little wire that plugs in separately that I'm not sure what is for.

So with this adapter, does anyone know where I can find the harness to connect my aftermarket unit? If I have to cut into the wires and hard wire it I will, but I'd rather not.

 

i own a 91 240 wagon and just got finished changing out my radio. Installed a
new sony from crutchfield. Crutchfield included the dedicated cable that went
from the new cable output of the sony radio (adapters matched perfectly) to the
input of the now removed amplifier cable that heads out to all your speakers.
That was also a perfect match. Very easy with the right cable. Try calling crutchfield.
If you can find your aftermarket radio on their site, they just might have the dedicated cable
for your volvo 240. Lemme know how u make out. Oh, by the way, my original cable ends,
that which ran from the radio down to the amp also had ends which were long, thin and
rectangular. Nick

 

Yeah I got it all from crutchfield and we figured it out. I suppose the little harness that hooks to the factory radio actually runs down behind driver side console panel and the larger adapter that matches with the after market harness is down there. Kind of odd, never ran into this doing a stereo in any car. Even my 88 240 had the correct harness right there behind the radio.

 

I am glad you sorted this out. Perhaps the former owner did some "modding"?

On my 1990 Volvo 240 the first owner wired in a radio from a Toyota Camry and mounted it.

here some pics



Harness



Whoever did this knew what he/she was doing as it looked good. It made it easy to replace the radio also as the local stores did not have the Volvo harness BUT all carried the Toyota one. I have a nice Alpine IDA-X305S in there now