I'm trying to resurrect the 4cylinder tach in the bird. Do the three posts in the back of the tach represent the three inputs? I have 12v ground and tachout from ecu set to half speed to compensate. And it won't work. Is there a test to see is tach works?
Thought?
Bump
Try hooking to the tach/ground side of the coil instead of the ECU tachout.
If this gets the tach to move, then maybe the ECU tachout has the wrong voltage levels for this tach.
I was thinking same thing. I'll give it a shot tomorrow.
Thanks.
Tach works of neg side of coil. Jim's gonna make me a circuit to get it to half speed.
http://www.foxtbirdcougarforums.com/attachment.php?attachmentid=36526&d=1433588256 been staring at this for hours cant figure how it works?
Figured it out just cant make it work with what I've got hurry up and wait