black05

hey guys, i want to get my factory tach to work but i have no idea were to start. could someone point me in the right direction to get my tach working in my 85gt? thanks

1985stang

Haha, same thing happened to me. It sucks.

dimebag

honestly i say **** the stocker and get an aftermarket one... our stock ones are off by quite a bit...

lookin4astang

IF you want your stocker to work, you should only need to locate one wire.I don't know if an 85 is similar to an 87 (I thinkits different being that it's a carbed motor from the factory.) On my 87 it is a dark green/yellow wire on the gray main harness coming from the driverside firewall next to the brake booster. If your car is carbed, then hook that wire to the negative side of your coil. You need to hook the engine side of that wire to the coil.

(By engine wire I mean where it connects, you want to cut it on the side of the connector that the engine harness is connected to. Not the side that runs into the interior of the car.) I just hooked my stock tach up to my carb converted 351.

black05

does this still apply if i have an msd ignition? i have an aftermarket tach that had one wire going to a certain spot on the box.