Hey guys, just bought the autometer monster tach from 97blackteg, was wondering what wires were what. I know the black is ground, but don't know what the white, green, and red wires are. One is power, one is accessories and the other is the actual reading of the RPM. Just don't know which is which. Thanks guys.

 

red ower
white= 12v acces.
green= rpm reading

 

best place i found to tap 12v and lights in your cruise control wires... i think the middle black wirewas ground... or 12v... i forget,..... but the red wire next to the middle black wire is lights... i think.... just get a multimeter and figure it out. good luck. i'd look for ya, but my car's in the shop

 

here ya go

Black=Ground
Red=12v Power
Orange=Accy.
Green=RPM read