best way to wire a tach(not stock)???

[DaTsUn72WaG]

i just bought a tach i want to put in my 72 510 wagg. it has a black,red,green,and white wire. where does the white one go? and if im correct, the green goes to neg. on the ignition coil and black goes to battery ground, red goes to ignition in car? are those three right?

[DISLEXICDIME]

its probobly for the tack light

[DaTsUn72WaG]

it doesnt have a tach light, im not sure what the white is for

[fiveNdime]

The white if I think goes to "power out" side of your light switch so that when you turn your lights on the light in the tach comes on.

[DaTsUn72WaG]

yeah i never thought of a facelight. just the shift light wich doesnt even matter if there is one or not because i have a stupid automatic. blaah wheres the fun in that haha. i shift it anyways sometimes, makes me feel cool

[datzenmike]

If you want trouble free operation change the ATF and filter every 50,000 miles, 30,000 would be better. Change at the first sign of discoloration or at the end of each season if towing or if in severe driving temperatures. These 3N71Bs will run forever with minimal upkeep BUT heat will destroy them. Hill climbing and towing are the worst. An in line trans cooler is a good idea for any automatic.

[kiznook]

Black - Ground

Red - Power

Green - Signal (Neg. side of coil)

White - Ilumination (Either from the light switch or just regular switched power)