teleflex tachometer wiring

[sny97321]

I have an earlier teleflex tach with four wires on the back. black,white,blue,orange can anyone tell me the correct hook ups for these wires

 

[midcarolina]

A picture would for sure help.......... But look real closely at the back of the tach each terminal should have atleast a letter next to it
should be I=ignition, G=ground, S=sender, L= light................ on some instead of S there will be a P for pulse, it's same thing different terminology.

 

[jhebert]

BLACK is usually battery negative.
BLUE is usually gauge illumination.

 

[sny97321]

there are no letters next to each wire. they come out of the back of the tach in a group

 

[midcarolina]

Well If I had to give you a educated guess and given what jhebert has said I would say

Black=neg
white = ign ( pos with key on )
blue = light
orange= sender/pulse

 

[jhebert]

Why not ask Teleflex? They are still in business and usually have outstanding customer service.

 

[MH Hawker]

This should be of use