highball
New Member
I would like to know if someone has the wiring diagram for the tacks on the 454 MPI horizon. I have a tack that still works from time to time but less than actual working time and did the back screw thing many times but nothing seems to work. The hour meter always works but not the tack. I replaced the tack for a new one 2 years ago and the new one does the same thing. wondering if the "puck" behing the guage panel for sync would do this but I have trouble thinking so as the sync gauge works well. I want to run a wire directly from engine to tack to see if this would help.
Any ideas or info would be greatly appreciated
Any ideas or info would be greatly appreciated
