**First of all please move this if it is in the wrong location, this is my first post and one of the only places to put this as a new member**
I am installing a Haltech elite 750 on my fathers 1987 Conquest TSI. The car is is nearly complete and is getting dyno tuned next week. I am finishing up some small odd ends and the last part is getting the tachometer to function properly. The engine is entirely stock including turbo etc. the original harness is in the car which I mated along with the new haltech ecu to provide instrumentation but I cannot locate the tach input wire. I can run a digital output from the haltech to the tach but I have looked at every forum I could find and was un able to locate. My service manual states it’s the w/b wire from the negative side of the of the coil. My issue is that my father removed the coil and most of the original engine controls and I’m left with a few dozen pigtails and wires to terminate. I believe the black and white wire was a switched 12v which I used for the ecu. I am not seeing any additional wires. Any help would be greatly appreciated!
