This has been bugging me since my standalone install. I cut ALL connectors when I installed my standalone, so after it was installed, I lost my tach. (i should of left that connector in tact) But I found the wire that gives the tach signal. And if the coil is lifted off the body (i.e not grounded) my tach works. And if I screw it back down to the body, the tach stops working again.

So when the coil gets grounded the tach doesn't work. Maybe there are two wires I need to reconnecct. Anyone happen to have a wiriing diagram or know the colors to hook up.....

 

Its working absoltly *** backwards. Nornally the coils assys will NOT work unless grounded to the chassis. But your there and I'm here, so I'll take your word for it. Here's a schematic.........