Next time at the boneyard, I'll find some E30 with the radio out and harvest some of the jacks that insert into the back of the unit, the speaker wire jacks, and any other that might be useful. Would make a bench test easier. This is a perplexing problem, I'm surprised that it's such a bugger to get to the bottom of.
Patriotism is the last refuge of the scoundrel. - Samuel Johnson
Last edited by cmac2012; 12-04-2012 at 08:13 AM.