Wiring up dash gauges? (Tachometer)
Hey all, trying to install a 4 wire tachometer today. Got all the wires hooked up properly except that funky green wire, which is supposed to go to the distributor.
Every single YouTube video on the subject shows every distributor shown as having a “tach” port specifically made for that wire.
These are all most likely newer model cars. I’m working with an ‘88 GMC Bluebird with the 8.2L Detroit Diesel “fuel pincher” engine.
I certainly couldn’t claim to be an engine expert, but I believe I found what certainly appears to be the distributor. This distributor of course does NOT have a tach port. So, I ran the green distributor wire to the negative side of the ignition coil, which is the only other thing I’ve seen people do.
When started up, you can tell it has power because the needle moves upon startup, and I tested the power with a voltmeter as well.
But the issue is that I’m not getting a reading at all from the distributor.
What would be your next plan of action in this situation?
I’ve attached some photos for reference. One is a photo of the engine, and there are a few of the distributor, the ignition coil as currently wired, as well as a wiring diagram.
Thanks for your input! It’s always appreciated.
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