I didnt do the install but one of my coworkers did and managed to get himself in WAY over his head and me a little bit too...

Apparently Customer purchased 96 Land Cruiser and noticed a ticking noise that was RPM dependant in the FM radio. As the RPMs went up the speed of the ticking increased. Turn engine off and there's no ticking. Apparently ticking wasn't there with AM or CD operation. Coworker installs speakers using factory wires, and installs deck using your standard met 70-8112 toyota amplifier integration harness.

Well tick is still there, and the customer wants it gone.

the first thing I checked was to make sure it was the speakers and not a valve or injector and it indeed was eminating from the speakers... Then we tried ground loop isolators, regrounding the deck to the chassis, regrounding the deck to the negative post of the battery, cleaning both battery terminals, checking ALL grounds in the engine bay, grounding the case of the factory amp, grounding the case of the deck, and tried different grounding points in the engine bay. We also tried a new deck, an amplified VW antenna adapter, and nothing fixes it!!

This leaves me thinking 2 things - spark plug/spark plug wire is bad, or even the distributor or rotor... Either that stuff or the factory amp needs to be bypassed. Thouhts?

 

This thread sounds similar.
http://forum.ih8mud.com/showthread.p...ht=radio+noise

 

THANK YOU THANK YOU THANK YOU!!!