Factory Tach Plug-In

[Clendenin]

Does anyone know if my truck has a factory tach plug-in. If it does where would it be located. Thank in advance and Happy New Year.

 

[cerberusiam]

Under the dash back of the light switch panel, if you have one. Should be a flat 4 wire connector black or gray. The 91. 5 was a switch over to PCM and IC so it is a crap shoot what harness you got.

 

[dpuckett]

The 91. 5 I had a few years back lacked a factory tach plug in of any kind- I think it started in 92. It is a 4flat plug, with black, orange, red, and I believe dark blue wires. Look under the dash just to the left of the steering column, and see if it is there. The square 4plug with teh pink and white isnt it.



Daniel