MISTERLX

Just put in a Pionee Radio but i keep getting feed back sound, i tried a new wire harness adapter but still get the feedback. Any one have a solution or ever heard of this? I appreciate the help

Pyroibw

check/ change your ground. are you using rca's to a amp? if so, your gain may be set to high, or your rca's are crap. or they may be 2 close to your power cable.

GEORGE_JET

What year is your car? Are you using a pioneer head unit, with a aftermarket amp? Or are you trying to use the stock amp? If you are using aftermarket amp, where did you hook into the cars wiring harness?

basketthis

What I think he is doing is using an aftermarket radio with a factory amp. This is a very common problem. The 100% fix for it is unknown but the best solution I have seen is to ground the factory amplifier (under the passenger seat or behind glovebox depending on year) and the aftermarket radio to the same location. I have been able to solve many of the engine noise problems this way.
Probably the most reliable and most definite fix is to bypass the factory amplifier. Here's a write-up I've done in the past that may help you in your venture. This is what I actually did when I installed my Eclipse double-din into my es300 (but eventually took out, which is another story ha).
https://www.clublexus.com/forums/lex...-included.html
Good luck again!

96playa

when using the aftermarket harness with rca's the ground in the harness is for the factory amp ground not chassis ground .the factory radio is grounded to chassis bythe factory radio brakets, this is why when you unbolt the radio when its powered on it makes all kinds of feedbackor cuts off. solution is to ground the new radio and the harness ground to a factory bolt holding the radio. make sure you use one thats part of the factory bracing and not a speed clip!! this should solve it if not, bypass the factory amp!

MISTERLX

tHANKS FOR THE SUGGESTIONS GUYS I WILL BE WORKING ON IT THIS WEEKEND AND I WILL POST BACK WHEN IM DONE. THANKS AGAIN

OH YEAH THE CAR IS A 1998 LEXUS ES300 WIHTOUT THE NAKAMICHI