tachometer wires

82 GT · 07-11-2004, 10:20 PM

I bought a used Sunpro II tach today cause I had an old cheap one that I didn't trust anymore.
Can someone help me out with where the wires go?
These are the color wires:

white
green
black
red

I know black is ground and one is the background light and the other two go to the coil. Can someone help me out?

tireburner163 · 07-12-2004, 12:34 AM

Red = Power (found a "key on" power source in the fuese box)

Black = Ground

White = Tach illumination (I've got mine wired into the dimmer switch that way I can turn the illumintaion up and down with the stock gauges)

Green = Tach signal (Wire it into the negitive (I think???) side of the coil. Wire it onto the "tach out" port if you have a MSD box.)

bigred90gt · 07-12-2004, 11:31 AM

Quote:

Originally posted by tireburner163
Green = Tach signal (Wire it into the negitive (I think???) side of the coil. Wire it onto the "tach out" port if you have a MSD box.)

You think correctly sir.

82 GT · 07-12-2004, 02:24 PM

Thanks

07-11-2004, 10:20 PM	#1
82 GT Import Slayer Join Date: May 1999 Posts: 2,241	tachometer wires I bought a used Sunpro II tach today cause I had an old cheap one that I didn't trust anymore. Can someone help me out with where the wires go? These are the color wires: white green black red I know black is ground and one is the background light and the other two go to the coil. Can someone help me out? __________________ '82 GT 351W (.060)Comp Cams 274* Extreme Energy cam, ported & polished heads w/ 1.94/1.60 valves 10.3:1 flat top pistons,stealth intake, Mallory dizzy,Holley 750dp carb, BBK shorties,Flowmaster exhaust,C-4 with 3700 stall converter, B&M pro shifter,8.8 rear, 4:10's, subframes, electric fan, powermaster alternator, 4 core radiator.

07-12-2004, 12:34 AM	#2
tireburner163 It's a lot like a race car Join Date: Aug 2000 Location: Meridian, MS Posts: 4,130	Red = Power (found a "key on" power source in the fuese box) Black = Ground White = Tach illumination (I've got mine wired into the dimmer switch that way I can turn the illumintaion up and down with the stock gauges) Green = Tach signal (Wire it into the negitive (I think???) side of the coil. Wire it onto the "tach out" port if you have a MSD box.) __________________ 1987 Buick T-type 1998 HD Electra Elide

07-12-2004, 02:24 PM	#4
82 GT Import Slayer Join Date: May 1999 Posts: 2,241	Thanks __________________ '82 GT 351W (.060)Comp Cams 274* Extreme Energy cam, ported & polished heads w/ 1.94/1.60 valves 10.3:1 flat top pistons,stealth intake, Mallory dizzy,Holley 750dp carb, BBK shorties,Flowmaster exhaust,C-4 with 3700 stall converter, B&M pro shifter,8.8 rear, 4:10's, subframes, electric fan, powermaster alternator, 4 core radiator.

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