View Single Post
Old 03-28-2011, 07:15 PM   #12
ray_mcavoy
Registered User
 
Join Date: Nov 2009
Location: Sherman, ME
Posts: 2,379
Re: How to connect a tach to HEI distributor?

Quote:
Originally Posted by kikkegek View Post
does anybody have the wiring diagram for the ECO part of the engine? My wiring diagrams from Haynes and Chilton only say the white wire from the TACH connection should run to the tachometer. But doesnt in my case.
Hi kikkegek,

I don't have a diagram for the Calif emissions feedback carb wiring, but I'm pretty sure that white wire off the distributor runs to a control module mounted under the dash (behind the glovebox).

Since you removed all the emissions stuff, I think you can safely unplug that white wire from your HEI and replace it with the wire going to your tach. Try that instead of tapping into that wire as I had mentioned earlier. Although unlikely, there might be something in the control module at the other end of that wire that's keeping the tach from getting a good signal.
ray_mcavoy is offline   Reply With Quote