ok, here goes....
were stealing my friends car to finish it and give it back to him for his birthday. its an 1980 AMC Spirit AMX with a 302 ford and a t5 that had been swapped in a few years ago. been sitting for a while while he put time and effort into saving his marriage, then lost his job.
anyway, im going to fix the hack job wiring in the car, reinstall the interior, and fine tune the whole thing. hell, i may even inject it with a GM TBI setup i have in my parts bin.
what i need help with is making the tach read properly. it was origonally a six cyl car, and the tach hasnt been hooked up since the motor swap. (the shop that did the swap did a beautiful job if fabbing the mounts and exhaust, but a really bad one everywhere that wasnt the nuts and bolts)
i know theres some trick about soldering resisters, etc. in place, but thats about it. any suggestions or advoce will be greatly appreciated. I would love to keep the stock gauges to keep the budget down.