> Could be RCA cables ran too close to power and ground sources,
That is a possibility. Try to tun your power wires down one side of the truck
and the audio leads down the other and not beside any factory wire harnesses.
> or it's just traveling through your
> grounds. Anyways. a ground loop isolator, will help it..
> Yes that may help but in my experience they cut down on the quality of
> sound, especially deep bass and highest treble. Better to try to solve the
> problem without them. Use them if nothing else works.
> << the place that installed my amp used plastic spacers to isolate the amp
> from touching any metal surfaces.
>
> That is probably not helpful and may hurt your ground to the amp depending
> on whether the amp has a floating ground. Anyway you have to ground the amp
> somewhere for its power. I usually ground the amp to the veichle chassis as
> close to the amp as possable. Seat track bolts are good if they are close
> to your amp location and you can run the wire under the carpet.
A better ground to the radio may help also. Sometimes the factory ground wire
to the radio head unit is not good enough. I have a Pioneer cd head unit that
fits the Chrysler dash size and 2 Power acoustic amps mounted behind the
passenger seat in my 99 R/T RC and I have absolutely no engine noise under any
volume setting or am or fm or cd play.
Jim in Waco.
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