Car stereo question...what did I do wrong?
 

So my new addition (1978 Mercedes 450SL) did not come with a working stereo...found the deck was just bad and left it at that. Purchased a basic Kenwood deck and installed it last week...worked well other than there is a bad rear speaker to replace.

Now the issue is when I drive the stereo will just shut off, will not power on...no matter what I do. If I stop at an intersection it might come back on, or not....just going down the road it comes on and off again. :confused: Meanwhile the power antenna operates perfectly, stays up the entire time so it has consistent voltage which does come through the deck.

I have checked the wire harness, all connections are secure and voltage is good. My thoughts are a bad ground or a short somewhere in the system.

Ideas?

30 years in electronics say run a second ground.

Thank you for the response, I will give that a try! :D

Sounds like a loose wire to me. Check your work.

so after a ton of head scratching, it turns out the new deck I had purchased was faulty. Took it back for a return and installed a new unit. All is good, thanks for the replies and assistance.