Review on Enhance Your Audio System with the PAC TR-4 Remote Turn-on Module by Nick Beck

Continuous 12 volt battery voltage constantly flows through the remote control cable. The input trigger just hovers in the air. In fact, the ground wire can also be disconnected without affecting the TR-4. After my battery died, I assumed my release cable must have been wrong. But no, my amp keeps working no matter what I do with the trigger (including turning it off). I need a 12v relay with a 5v trigger. Will be updated based on PAC Technical Support response.