Teleflex Tachometer Wiring

jrbdjb

Cadet
Joined
Jul 11, 2016
Messages
16
I've got a Teleflex Tach that is new, but didn't have the wiring harness. It has a 4 prong plug labeled DCBA. Can anyone tell me what each prong is? (B+, ground, signal, light).IMG_20220327_180624416.jpg
 

Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
28,108
What does the manufacturer say? Don't they sell a harness?

Tachs need ign power, ground signal and have a light for night boating.

Actually, you can check the pins to the light bulb. That will tell you night light and ground. Then it is 50/50 on the other two pins.

Don't overlook those 12-24 bolts. The look like the connections on the older tachs that used ring terminals. Bottom left would be signal, top right is lights, middle two are ground.
 
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