2007 28' Heat When I run the trim up or down I get a Nasty POP out of the Stereo does anybody have any input or a cure Thanks In Advance

turn the stereo off!!!

While Turnng off the Stereo would effectivly eliminate the noise, its not qite the cure I was hoping for

Sounds like a bad ground. My boat has trim pump are wired directly to bat so it works w/ bat switch off. Stereo + (memory) is also so settings aren't affected by bat switch being off. Check those. Stereo - is @ ground bus in fuse panel, + to dash switch as well as all other accessories go through bat switch. Amp? I wired mine direct to bat.

I know turning off the stereo isn't the fix you look for, so how bout turn up the big block?

i agree with 90mphrage, sounds like a ground problem

Had the same problem with my rage when I installed new stereo system. Took it back to the shop. They said it was a relay loading up. Hope that helps, I can ask my guy what they did to fix it, i'll be over there tomorrow.