Quote:
Originally Posted by oddrelic
The amp is on when ever the car is on. The head unit switched the antenna power line on when it received a 12v switched power. The line goes to 0v when the car is off which will keep the amp from staying in a powered on state like we had from the test harness attached to the 12v always hot wire.
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I guess we're misunderstanding each other.
The amplifier always has a standby +12 volts. It gets that through the 15-amp fuse that you had to install, through the 6-pin connector.
When the head unit turns on, it sends ANOTHER +12 on that amplifier turn-on lead on the 10-pin connector, which actually turns the amplifier on via a tiny relay inside. All of the high current runs through the main, constant power wire through that 15-amp fuse. The turn-on signal is a very low current.
The amplifier turn-on lead should energize and de-energize with the head unit to turn the amp on and off. That's why I need to make sure it is turning on and off with the head unit while your car is in ACC or ON.
Did I explain that any better?