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Tach goes to zero when headlight switch is on?

PostPosted: Mon Jun 27, 2016 3:16 pm
by ftsoft
I've only had the headlights working for a couple of years. I have noticed that when I turn on the headlights the tach goes to sleep. After looking at the wiring diagram I can't seem to figure out why this would be. Anyone suggestions appreciated.

Frank

Re: Tach goes to zero when headlight switch is on?

PostPosted: Mon Jun 27, 2016 3:44 pm
by Mazzini
It's the earth on the back of the tach.

Re: Tach goes to zero when headlight switch is on?

PostPosted: Mon Jun 27, 2016 4:56 pm
by ftsoft
Yep.. That was it. Nut was loose. Thanks.