In my ’66 I have installed the original tach wiring available from many Mustang part dealers. I’ve noticed it utilizes the positive side of the coil. My aftermarket tach requries the negative side of the coil. Are there any tachs out there that use the positive side (besides the original ones)? Also I by-passed the resistance wire some time ago, so 12V flows through the circut.
I'm in the process of wiring to the neg side of the coil for the current tach, but I hate adding more and more unmarked wiring to the system. Options?
I'm in the process of wiring to the neg side of the coil for the current tach, but I hate adding more and more unmarked wiring to the system. Options?