Car Stereos: car stereo problems, jeep wiring, aftermarket radio


Question
QUESTION: Scott...I had already bought one radio, that did the same thing before I contacted allexpert. Already thinking that it might be what you said. I took it back  and exchanged it for the one I have now.
So unless both radios are bad the radio isn't the cause.
The radio is hooked up to the factory [Jeep] wiring harness. Which by the way has a factory amp under back seat. I thought maybe it might have been the factory amp going bad, and bought another amp. That didn't fix problem either. I've wiggled wires, checked all of the speakers and still can't find the cause for my problem. I have about decided to run wires directly from radio to speakers, and bypassing factory harness, just using factory hot wires.
I do have the factory [remote wire] spliced into a sub woofer amp [remote wire] and radio remote wire. I don't know if this could be the cause or what. With the radio having a built in amp, the Jeep factory amp under seat, and the sub amp in back of car, could these all hooked together be canceling each other out?
Since I'm reasonably sure it isn't the radio, please let me know your thoughts on what to do.
Thank-you !

ANSWER: Keith, the problem may be from splicing into the factory hot wire.  The factory radio is switched on via some type of code that it is sending out to receive power to it.  When you wire in an aftermarket radio, you cant use the factory hot wire to power the radio, because it doesn't provide power directly.  One of the other wires must tell the computer to put power in that wire.  It is really weird, and I think that might be the problem.  Since you have spliced into the power wire, you may have interupted that communication.  I believe there is a blue or purple wire under the steering column that must guys use to switch their aftermarket radios.  I would try and find that wire to switch your sub amp and leave the factory harness alone.  Try unhooking the sub amp from the system and see if it starts working.  Good Luck, Scott

---------- FOLLOW-UP ----------

QUESTION: Thanks for your reply Scott.
When door speakers quit working, the sub still plays, but it is 'muffled'.
When door speakers are playing, the sub plays , but you can hear everything instead of just the bass.
Just thought I would mention this.

Answer
I still think there is something overloading the system.  If you unhook the sub amp, you should be able to eliminate that as the problem, if the problem keeps occuring.  If the problem stops, then you know there is a problem with the sub amp connection.  Hope this helps,Scott