Hooking up a tach for Pilot drop

[Oldman]

I just finished going thru the carbs and also did a sync job. Now I want to do a pilot drop since I don't have a colortune but I can't remember how to hook up an external tach. Do I use both coils or one? My tach is just like a multi-tester, 2 leads. One red wire, the other black. Can anyone give me detailed instructions on? Thanks

[Guest]

Either coil is fine. You don't need both. If you look at the wiring diagram, the tach on the motorcycle is only driven by one coil. Accessing the wire/s on the other hand, could be difficult. Just make sure you're not on the B/w wire. That's the 12v that supplies power to the coils. A tach won't read on a constant power signal.

[Oldman]

Thanks, it's been a while since I've done this. I do remember having the false tank off. Must have been when I replaced the spark plug wires a few years back.