From the submitter:
"Well, I have car music again. It doesn't sound great, and I have to manually apply +5VDC to turn on the amp, then disconnect another cable to turn it back off... but it works for now."
I hear you do great covers of The Rolling Stones and Weezer!
I only listen to music if it's adapted through at least 1 obscure format. ~Not-So-Handy Andy