So this weird buzzing sound has been randomly coming from the fuse box inside of my truck. And when the loud buzzing sound comes on it my windows and wiper blades and garage opener and inside lights seem to get very little power and sometimes none at all. I replaced the number 2 relay today and it still is happening. The buzzing only happens when I have my truck in drive or reverse. It is really weird. Anyone?

 

You have a leaking front windshield. Your gem module has gotten wet.