wiring a remote relay

Howdy y'all, starting a build, and I'm concerned about heat from my amp given the location I've got planned out for it. It'll effectively be sitting in a cabinet, and I'm planning to cut a hole out in the top and using two PC fans as exhaust fans to try to keep it cool. My question comes down...

My first thread here, and just signed up. I have spent some time searching the interenet, youtube, and found here. Got a couple hours in, and thought its time to ask, hoping for some help. (question is the last paragraph). I had my stereo system installed by a shop a couple years ago, and...