So, my sister has a 2007 Jeep Commander with the Boston Acoustics amplifier. I installed a pioneer stereo/nav yesterday with the PAC interface harness I ordered from crutchfield. Initially when I wired it up and plugged it into the harness in the vehicle everything worked great, am, fm, CD played, sounded great. Then, I mounted the receiver, ran the GPS antenna, ran the IPOD adapter, and buttoned everything up. After putting everything together....nothing....the receiver powered up, looked good, but nothing out of the speakers!!!! So I pulled the unit out and checked all the wiring (actually re-wired everything)and still nothing. So, getting late, I decided to put the stock radio back in and attack it another day and everything worked fine with the stock radio back in.
Everywhere I read says that on this vehicle the factory amp needs to be bypassed in order for an aftermarket reciever to work. When I called crutchfield technical support though They said all I would need is The PAC interface. Even though, why would everything work fine one minute, and the next I have no sound. Any help would be great.