hello HT, I'm trying to install my system and when i installed my head unit, i noticed that when i turn the key to the off position the head unit wont turn off. radio says on all the time. i tested the ignition wire from the radio harness n no power.what can i do to fix this problem

 

You probably have a couple of wires swapped on the radio. There is a continuous power wire and a switched power wire. The radio will have two separate power wires. That may fix your problem.