Kenwood Amp Issues

So I installed a new system in my truck and everything was working fine until I had to disconnect everything and move things around (amp & dsr1). I had to rush the install because of weather here in Florida. So I didn't have it set where I wanted it. So now I get a popping sound when I start the truck and when the dsr1 switches off. Didn't have this problem before. However I noticed that when the dsr1 is off the amp is still on. If I tug slightly on the power is goes off. And when I start the truck no popping and everything works like it suppose too. Any ideas why this is happening?

 

After further review I think its the P. Con wire coming from the dsr1. I have it tight but I wiggle it and the power comes on and off on the amp.