Tachometer

[CarlG]

Originally Posted by Dusty

... Someone suggested here that I fill the vacant hole in the dual mount bracket( I have a water temp gauge on the other side) with an hour meter ...

I put a clock in mine -- just another suggestion.

[Dusty]

Originally Posted by James Rogers

Are you using a pop out ignition or a simple on/off switch?

Simple on and off.

thanks
dusty

[Merc Cruzer]

Dusty:

Take this for what it is worth...I have a 6 volt POS ground system in my 53' Merc...I installed (temporally) a no name tach to check shift points and speed at different rpm's...it does have a switch for 4,6 & 8 cyl...voltage didn’t matter.

4 wire tach:

Black = hot (-) when swich is on
Red = ground (-)
Green = (+) side of coil
White = heat light switch


2 wire tach:

No switch for no. of cyl's - 8 cyl tach from an old Jeep
one lead to (-) side of coil
other lead to (+) batt (w/ switch - I did hook it up hot to the battery the first time and found that when you turn off the ign switch the motor jsut kept running)