Hi Bill, Yup, I can tell the colors - I *assuming* the black one is ground. The two mystery wires are yellow and blue. I am reading the values from the tach - it's not wired or connected to the car. Neg on the black and the positive on the yellow and the again with the positive on the blue. Is there another method I can try?
-Graham Quoting Bill Lessenberry <[EMAIL PROTECTED]>: > At 02:06 PM 1/23/2005, you wrote: > >Say you had three wires coming from a tach - one was ground, one was the > power > >and one was the coil lead. Now, if you couldn't tell the power and coil > leads > >apart, which is the best method to do so? > >One is reading a lower ohm reading than the other ... is that the coil wire? > > Can you tell what color the wires are? When you say you have a lower > resistance reading, what two wires are you reading or are you reading from > the wires to the tach case or a ground? > > BL > > > -- Graham Wooden, RHCE [EMAIL PROTECTED]