2004 Radio whine

I have recently replaced both my alternator and battery.

Before I replaced the battery, I had an intermittent whine through the speakers which was directly related to engine speed but it went away after battery replacement but now it is back with a vengeance.

I'm certain it's a bad ground but I can't find any reference for ground locations on this truck.

Anyone have a source?

Just took both terminals off, hit everything with a wire brush, spread a thin layer of dielectric grease on and then tightened the snot out of the bolts.

No more noise for now!

Just took both terminals off, hit everything with a wire brush, spread a thin layer of dielectric grease on and then tightened the snot out of the bolts.

No more noise for now!

Thanks for sharing what you found!

Interesting. I would have never thought to do that!