JR
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Votes: 0 (Vote!) | | Posted on Sunday, November 13, 2005 - 10:31 pm: | |
Probably....ignition is red (12 or 24V ignition switched), ground is black (attach to a ground stud), another wire will go to the dash lite and may be blue (look for the dash lite and ID this wire), that will leave one unused tach wire left which goes to the "R" terminal on the alternator. Hope you have a wire dedicated for a tach in the coach that terminates in the dash or front junction box.
If you don't see these colors, don't attach the wiring. Take out the dash light and find out which wire is common from the light ground...that will be a ground wire for sure. The light wire can be ID'ed by checking for continuity to the light base lead. The light wiring may be copper strips beside the removable bulb. Still leaves two wires to guess at.
Now that I've guessed...what color are your wires and what brand is your tach? I've got the wiring diagram for my Isspro tach and would see what it says. JR |