Thread: Stereo wiring revisited..

Well, it's
Car - 1
Me - 0 .. in triple overtime :P
Actually I got everything installed and working (didn't do the steering wheel controls at this time) Back up camera, GPS everything works fine.... except for the passenger side front speaker. So I did some trouble shooting. Verified that the speaker is fine and I have output from the unit to through the wiring harness with an ohm meter. Both wires in the door have no continuity to the wiring harness, so I started stripping the passenger side of the dash down. Took off the glovebox door and the kick panel 'shelf' that goes to the firewall, that's when I noticed this plug handing down:


You can see another plug to the right nearby, but they do not reach each other and the are not compatible..
This is the plug on the right


this is plug on the left


This is where it gets crazy....The plug on the right has the same dark green and bright green wires that the wire harness has, so just for grins I did a continuity check from the wire harness at the stereo to that plug



I get continuity !! Like I said, all the other speakers work so I am at a dead end at to why the passenger door doesn't have any continuity, and why this plug does... Anyone know what the plug under the dash is for?? BTW, the plug on the left has matching wire colors as well, but no continuity to the speaker wires in the door either. If I have to I can run new wires to the door, but that's a real PITA...any ideas guys? Just want to make sure to PO didn't disconnect stuff and just leave it hanging that is needed...

So I can't say for sure since I have a 1998 manual, and apparently these were ONLY in select 1997 GTPs. This interestingly is where the myth started that the bose amplifier doesn't actually amplify the front speakers. This: http://www.grandprixforums.net/threa...bout-stock-amp little baby amp is what should be there. I've seen a few in the junkyard, but never peaked my curiosity. Apparently, no one has the pinout for these connectors at all! I'm going to try to locate one of these in the junkyard and use a test light to at least find the color configuration for the front door speakers. I'll let you know.