My amp and subs have been working fine until Wednesday evening. We loaded my truck to go to the beach and on the way down I noticed my subs weren't working. So once I get down there I started messing with it to get it to work. All the connections are good and no blown fuses. So we took a multimeter to test voltage and we are getting power and it's grounded. We check the amp turn on wire and it read at .1 volts. So it's not being told when to turn on but when you have the truck on and the turn on wire off the amp then touch it to the terminal it hooks to the amp turns on for a split second then turns off. The connection to the radio wire is good and nothing wrong with the wire the whole way back. Any idea on what's going on? What should I try doing? Just get an new turn on wire? It's also now making a weird beeping noise, it's a series of 3 or 4 beeps 3 times in a row then goes away and happens after my truck is turned off