I sure could use some help with this one. My factory ('77 302) tachometer hasn't worked since I removed the guage cluster to put in some new bulbs.
That was a few months ago, and I figured I must have a bad adapter or whatever that thing is that the connector plugs into that then plugs into the tach itself.
I found the exact same part from the junkyard, and finally got around to puting it in, and then....... nothing.
I've used a test light (when car is running)to see if I'm getting power from the plug, and I do on 2 of the 4 prongs. When I test it with the adapter on I only show power from 1 of those 3 prongs.
I don't know jack about these electical things, but is it possible the actual tach itself is the culprit? Or should I be getting power to more prongs on the connector and/or adapter?
Hopefully somebody has been down this road before?
That was a few months ago, and I figured I must have a bad adapter or whatever that thing is that the connector plugs into that then plugs into the tach itself.
I found the exact same part from the junkyard, and finally got around to puting it in, and then....... nothing.
I've used a test light (when car is running)to see if I'm getting power from the plug, and I do on 2 of the 4 prongs. When I test it with the adapter on I only show power from 1 of those 3 prongs.
I don't know jack about these electical things, but is it possible the actual tach itself is the culprit? Or should I be getting power to more prongs on the connector and/or adapter?
Hopefully somebody has been down this road before?