Quote:
Originally Posted by mathematics
run a new constant 12V from the battery. some have this issue, others don't. not sure why. just had to do that last night to an e92 head unit install we did 2 weeks ago. car had 12V constant at the harness for the 10 minutes i held the test light there with the doors all shut but i guess after a few hours it timed out.
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I am pretty sure it is like that for all e9x's. There is no constant 12 volt for the radio harness you need to run a separate wire to the battery. I may be wrong though.