Tach, quick ?

[TheOtherCarolla]

Let me triple check -

To hook up a tachometer:

Red is positive
black is chassis ground
Green is neg side of the coil
white is illumination

Should I run the hotwire directly to the batter, or to a fuse?

I had it installed on my geo, but i forgot lol
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[DoubleEdgedWomb]

Run it to switched power that's only on when the car is on. Otherwise the tach will be drawing power even when the car is off.

[Flashmn]

Yeah, relay/ignition wire and always use a fuse.

[madking411]

dont wanna jack the thread, but i was wonderin, to hook the green one to the neg. side of the coil, do u hafta remove the ignition rotor to get access or what? because, i just got a guage too, and i was thwarted from installing it because of that...