so i got a tach

[koolkatz220]

ok well i got an aftermarket tach because i didnt feel like putting the energy into looking through junk yards and what not... one problem...
the wiring diagram that came with it doesnt cover distributorless ignition systems... so naturally black goes to ground and red to an ACC power supply but what about green?

[Mugens Modified]

i think it's actually green to ground red to positive and black to negative but i'm not 100 percent 'bout that

[jster28]

red goes to 12Volt, black is ground, and green is tach signal. You need take the green and spice into the tach signal wire at the diagnostic port in the engine bay. The tach wire is white/purple color. Hope that helps

[mazpro]

^what he said^ that's how I got mine hooked up