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Message:: [QUOTE="Kenny Simmons, post: 280903, member: 12146"]The truck belongs to me. The noise is not from the alernator. I have had every radio tech I have found on the road that I heard was good to check all my grounds to be good. I have had a connex 4300, 4600, 4300-300, and now a Ranger. Multible Galaxy's. Wilson 2000 truckers on the mirror mounts with new coax as of last weekend. Again all grounds including a new ground strap on the ecm to the frame. Noise is there. If you uncouple the antenna coax there is not noise at all. Remember, when the truck is sitting still the radio is perfect, quite and receives exstremely well  even when you rev up the engine.The static comes up with the boost gauge and back with the boost gauge once you get to 20 mph. So far to date I have spent well over $1000 on just rewiring grounds and testing everything anyone can think of. My next move up until tonight was going to Jackson, MS and put it on the dyno there and check my fuel curve as well as check ecm componets while we can see the noise when the engine loads up.[/QUOTE]