hey everyone,
I have a 88 Mav 4.2 petrol. I installed a ignitor and flame thrower coil last week and when I installed it, the tacho started bouncing. I contacted the place where I brought and they told me to buy a 10k, 15k, 20k resistor and try that inline. I did that and none of them worked. It is just the standard tacho and I didn't have any problems before installing it. I need it to work as I want to do some carby work on it and need the idle and revs to be right.
The wiring is:
positive coil: red ignition, red from ignitor, black white from engine
negative coil: tacho, and black wire from ignitor.
Any suggestions would be great thanks.