i have a 6 speaker factory single cd player w/ am fm radio w/ power antenna. does anyone know , when installing a aftermaket h/u ,do you remove the factory amp sitting behind the head unit?
And what is the second smaller coxial looking plug in the back for ? I heard it might be for the power antenna, if so, how is it hook up to a aftermarket unit? I'm going to be using a slightly older pioneer cd player .
Thank you

 

look in the tech section's electrical forum and look for 3rd gen stereo writeups

 

if you aftermarket HU has an internal amp, then you need to take out the factory amp, and dont worry about the second connector

 

Remove the Amp - You will need either a Harness adapter to attach to what exits the existing Amp (available multiple places like Cutchfield) to your new stereo or to cut that connector off and wire to that. I installed new speakers and tweeters in the front and it does sound better than it did with the stock speaker after the HU install. I did not install an Amp a new Amp - I like my hearing.

That second wire is an additional antennae wire - ignore it.

 

Hey Thanks for clearing the mud on this issue.
BTW, gpcollen1, what brand , model speakers and tweets did you use?
Thanks

 

Oh Boy - They are Alpine (model #?????) - I bought them a few years ago (expensive at that time) and never installed in my van. They sort-of fit in my 4R - with a little modifcation they are just GREAT. I am never afraid to make a few nips and tucks.

There are many posts on HUs and speakers in these forums. I see that most people add Amps and Subs. My one recommendation if you replace the speakers and tweeters - - - Replace the Cross-over and run new wires into the door. i did not initially and ended up doing it later due to issues with the wires.

 

Thanks for the info!