Mustang Tachometer Wiring Diagram

Mustang electrical and vacuum diagrams.

Mustang tachometer wiring diagram. Hi have my first mustang and im trying to fix it got some problems with tachometer for a start. I need wiring diagrams for an 85 gt 5 speed and a 89ish mass air gt 5 speed. Once you have selected a mounting location you can run the four wires that operate the tachometer. Mustang cylinder head basic mods engine mechanical information.

I did check the wiring so i think i got that right. Tach wiring for msd 6a box nastyz28 how to hook up a tachometer to an msd ignition it still runs msd tach signal gmr pickup msd 6 series installation instructions 6a 6al 6t 6btm hooking tach to msd 6al vintage mustang forums msd digital 6a and 6al ignition control 6a pn 6al tach wiring question msd ready to run auto meter and mustang msd tach. Tachometer doesnt work and never did. The factory style filter looks like a condenser with a wire and connector on each end one of which plugs onto the hei distributor and the other onto the tach lead wire.

The tachometer is designed to show the engine rpms or rotations per minute. This process if much easier if you have an old harness from a 1990 1993 that comes out of the instrument cluster. Aftermarket part reviews general discussion about muscle cars. Wiring your new autometer tachometer into your car will complete the installation.

1979 2017 ford mustang diagrams troubleshooting documentation. The msd box produces a square wave 22 5 output for the tach signal and doesn t work with the oem unit. Then the wire can be inserted into the previously unused connection hole on the plug. 94 95 mustang electrical and vacuum diagrams.

The wires ne ed to be as long as possible 6 8 inches and they can be successfully wire tapped and soldered to the factory 1987 1989 harness. You can have rcci modify your tach so that it will work without having to wire in that tach adapter if you still want to use the msd box. There is also some wiring left from the original harness carbd 85 that is doing nothing but taking up space and we are. When i run the engine i measure about 12 v in to the tachometer and 12 v out and still it dont work.

This article on how to wire an electronic tachometer doesn t have anything to do with project x other than that 57 is the granddaddy to super chevy s chevelle. Somehow we cut a wire that killed the tach and cant figure out what we did wrong.