Greetings again all. So I am at the stage where I have installed the 2 new fronts and the 2 rears in my 1998 Grand Prix without amping them. I spliced the tweeters onto the fronts so they stay functional and I removed the second speaker set from the rear to open up 2 small holes in to the trunk for when I install the subwoofer. I have a question at this point.

Which wiring harness/harnesses do I need in order to add the 4 channel amp for the speakers and another amp for the sub while keeping my OEM stereo? I would also like to keep my radio and steering wheel controls functional.

Thank you.

 

Sig test. Sorry new here, just setting up.

 

BHA1858 GM (21 Pin) 1988-2005 - Aftermarket Radio $19.95



if i understand what you are asking...

 

That's the harness I would need if I were installing an aftermarket head unit. I would like to add a 4 channel amp and a 1 or 2 channel amp to the STOCK head unit while keeping my steering wheel controls functional. Thank you.

 

ahh i see what your asking.. ive got a 99 grand am so i understand what you want to do you just do not want to loose your wheel controls correct?

 

Yes, as well as keep my stock stereo.

 

Sounds like you need a LOC. " line out converter " Can easily be set up to do this task.