GS023

I am converting a 74 Corvette to an electric tach from 75. Can anyone help me with the 3 connections on the back of the tach. I am sure that there is a 12 volt, ground and tach wire but dont know which is which.

Thanks for your help.

Joe

:banghead:

JOliver

There are 3,Two spades on top and one on the bottom ...looking at the tach from the rear...From left to right on top -positive- -Negative(ground)-
-signal-Tach_

Any more help needed
Email me
VetteInstruments@aol.com
Jason


[Modified by JOliver, 3:51 AM 3/10/2004]

GS023

Thanks for the help.

Joe
:hurray:

Z-man

I'll be doing this soon (converting to an electronic tach of some sort). What are you using as the signal to power the tach? Do you think I can take the electronic mechanism out of a '75 unit and fit into an older ('70) type tach mounting?

Thanks -

GS023

It dropped right in the 74 no problem. The font on the numbers is slightly different. Have not hooked it up yet to se if it will work. On the 70 you should hook the tach lead to the coil.

Joe

:chevy

zwede

You can swap your old faceplate over to the electronic movement and get the correct numbers & redline.

Z-man

Thanks guys - this should be easier than I thought...
:yesnod: