I have a '73 Merc that I am working on. I am attempting to get the timing and carbs set up and have this old tach that was on the old boat that this motor was on when I got it. It was hooked up but had some HORRIBLE water damage to the wiring and there was no way of tracing how it was hooked up. It only has 2 wires coming out of the back of it. One is lime green colored and the other is black. I would assume that the black is ground but I don't know were the green hooks to. Any one had this problem or know what I am talking about that might have some info for me...I would love to hear from you. Thanks for your time and help.
Tach is "Airguide- Sea Speed P-6487
Thanks!!
Tach is "Airguide- Sea Speed P-6487
Thanks!!