1979 pickup tach diagram needed (1 Viewer)

Joined
Feb 13, 2018
Messages
69
Location
Southern Illinois
Trying to get my tach working again. Power and ground are good, the Haynes manual doesn’t have the right color wiring for a 79. Already swapped another cluster too with no luck. Anyone have factory 79 service manual or can tell me which wire is the tach signal?
90D6E676-737E-49BA-A2DE-6B12166BDDCC.jpeg
 
Joined
Aug 2, 2006
Messages
4,128
Location
Jefferson
 
 
Pretty certain its black from tach to coil. Dont think there are splices.
Lmk i can get better pics
 
Joined
Feb 13, 2018
Messages
69
Location
Southern Illinois
Pretty certain its black from tach to coil. Dont think there are splices.
Lmk i can get better pics
that’s why I’m getting confused, when i ohm the yellow wire under the hood and the black wire on the back of the cluster it get 0 ohms which tells me that the signal wire is good but still no working techs on two different clusters.
5B520F85-257B-4F7F-A472-AD1CF5318945.jpeg
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top Bottom