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2001 Volvo S40 Stereo Wiring


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rharris19 
Member - Posts: 33
Member spacespace
Joined: September 14, 2002
Location: United States
Posted: January 08, 2004 at 7:56 PM / IP Logged  
I have a 2001 volvo s40 and i am trying to install an aftermarket radio in it, but i can't find anyone that actually has a wiring harness thats fits. I bought a scosche one that said included my modle but alas does not fit. i have taken out the speakers to see what wires go with what speakers but i have found that there is only one set of 2 wires on the stock harness per pair of speakers, so it will be hard for me to wire them this way. I really don't want to have to run new wires to the doors. I Have no idea which wire is the dimmer or power or ground and so forth. The wires that are at the harness are as follows:
Harness one:
Dash Speakers: Brown
               White
Front Speakers: Gray
               GREEN/ YELLOW
Rear Speakers: Yellow/Black
               GREEN/ Black
????: GREEN / WHITE
       Yellow
Harness Two:
Thick Black
Thin Black
RED / Black
Green
Yellow/White
Thick Red
Thin Red
BROWN / White
geepherder 
Platinum - Posts: 3,668
Platinum spaceThis member consistently provides reliable informationspace
Joined: October 27, 2003
Posted: January 10, 2004 at 9:58 PM / IP Logged  

You can try a Metra harness and see if that works.  If not, you will have to hardwire it.  I had to hardwire an old Mercedes for a customer, and I told him it'd be an extra $75 if he wanted to fade front to back since the plugs on the back of the radio only had common left and common right leads.  I suppose these went to an amp somewhere (I don't know), however they still "pop tested" out okay.  I hate working on German cars.  He didn't want to pay extra, so I combined the two left ouputs from his new headunit, and combined his two right outputs from his new head unit- it worked great.  You probably don't want to do that, but it may give you an idea or two.

The thick black wire is probably going to be your ground, so test this with your multimeter.  The thick red is probably constant, so again, test this.  Now using your meter, find the accessory wire.  Now all you'll need are your speakers.  Test for continuity on your candidate leads.  If nothing, you may have to search for an amp.  Hopefully this'll get you on the right track.


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