Aftermarket amp wont turn on
 

ok so the vehicle is a 91 imperial and im doing a install on it but cant get the amp to turn on for the life of me,it turns on right when you hook up the deck but as soon as i plug in the antenna it turns off ive checked all my wiring,fuse's etc i even pulled my amp out of my car today and tried and mine didnt turn on even, i was told to wrap the deck ground around the factory ground strap and tht didnt work either ive tried almost everything i can think of but can not get this thing to turn on and stay on,it turns off as soon as u touch the antenna wire or the factory ground strap to the deck,any help would be greatly appreciated ive been working on this car for prob a total of 3 days and cant figure it out,and no i dont have the antenna wire hooked into the remote so thts also not the issue