Other than the Brown wire, do any other wires connect to the positive side of the ignition coil?
Just Brown per this diagram
http://www.mymopar.com/downloads/1973/73BarracudaA.JPG
However I notice they omit the Grey wire to the negative side for the tachometer I suppose because all do not have a factory tach.
I've noticed you have had issues getting spark. While it's not that common a bad tachometer will ground out the coil so you might want to leave the Grey wire off for a test.
Positive side is Brown Only , negative side is is black /yellow trace to ECU & Grey Tach wires
Thanks guys
The factory did connect the interference elimination capacitor to the plus side of the coil.
Quote from: mopar jack on October 29, 2020, 02:09:05 PM
The factory did connect the interference elimination capacitor to the plus side of the coil.
Ahaa, there was a black wire with a broken end on the positive side along with the brown wire. After removing my old coil I saw the capacitor but there was no wire coming from it. My radio does have alot of engine static. It's been like that for decades. I thought I had crappy ignition wires.
per the service manual the factory used 3 capacitors to suppress engine interference. One integral to the alternator with the output stud , one at the instrument cluster connected to the voltage limiter and one on the coil.
I need to get a new capacitor for the coil. That explains the black wire on the coil with nothing on the other end it....it came out of the capacitor.