So I had a aftermarket Alpine headunit professionally installed in my 2000 4Runner SR5 about 4 years ago. I recently went to take it out to reinstall the factory radio and discovered a problem. The harness that transformed the Alpine headunit's wires into plugs for the 4 Runner turns the one plug from the Alpine headunit to two other plugs. That is what I see now, the two plugs that are suppose to plug into the factory radio but the factory radio only has one place to plug them in. So did the place that installed the aftermarket headunit throughout a piece or what exactly is wrong? If anyone can answer my question I would most appreciate it. Thanks.

 

Those 2 plugs plug into the stock amplifier. Out of the amplifier is the one plug that plugs into the deck. Your amplifier may still be bolted in the truck. Its a big shiney metal thing bolted behind the stereo. If its not there, I guess the install shop stole it.

 

Is it attached to the factory radio or is is bolted to the car itself?

 

I just took mine out and sold it and replaced it with an alpine, I remember someone here took a picture of there stock amp. Do a search for that pix, it will probably better help you I.D. your stock amp.

 

Yes, the stock amp is bolted (actually screwed) into the body right behind the stereo.

 

I don't know how to imbed a pic, but if you give me your email I can send you a photo of what it looks like. I sold mine after replacing it earlier this year.

 

heres what the stock amp looks like https://www.yotatech.com/forums/f96/returning-my-car-stock-audio-cd-player-need-help-amp-placement-87740/