Does anyone know if the factory MACH 500 stereo puts out a minimum 5 volt signal to turn-on/off some other device? I've checked everything that I can in the car at the back of the radio and I can only find one that sends out 4 volts (aux output). I'm trying to get my powered sub to turn on/off with the radio and I need a 5 volt source. I can use the accessories 12 volt source, but that means my sub will turn-on whenever the key switch is on, even if the radio is off.
Is there another location in the car where the radio switched 12volt power is located?
Any ideas or experience with this same issue?
Is there another location in the car where the radio switched 12volt power is located?
Any ideas or experience with this same issue?