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1973 - 1979 F-100 & Larger F-Series Trucks
sun super tach 2

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sun super tach 2

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Old

Feb 1, 2020 | 12:12 PM

#1

Formulaz95

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New User

Joined: Aug 2019

Posts: 7

Likes: 0

From: ND

sun super tach 2

i just picked up a sun tach for my 73 f100. It has no wires on it but i can see 4 pins. My question is anyone know which is what? I can see a three letters, a T, B and L the other is hidden. I Paid $5 for it, would be great if it works. Thanks for any info

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Old

Feb 1, 2020 | 01:31 PM

#2

Idaho Highboy

Tuned

Joined: Jan 2017

Posts: 338

Likes: 8

From: North Idaho

Not sure what pins correspond to what wire - any more information that you can share?

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Old

Feb 1, 2020 | 01:34 PM

#3

John89

Fleet Mechanic

Joined: Jul 2017

Posts: 1,448

Likes: 163

From: East Texas

Are the pins on the inside? Here is what I can show without tearing into it.

With the cylinder switch at 6 o'clock:

Green runs to about 5 o'clock
Red runs to about 12 or 1
Black and white side by side to about 11.

Green goes to coil
Red to keyed hot
White to dash lights
Black to ground

Hope this helps.

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Old

Feb 1, 2020 | 03:44 PM

#4

Formulaz95

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New User

Joined: Aug 2019

Posts: 7

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From: ND

sun super tach 2

thanks for the help guys, i just got back from a buddy's house who has a uncle that told me what the pins are...
L-- light
G-- ground
B-- 12v switch
T-- neg coil.
hope this might help someone other than me....thanks again..

old guys rule...lol

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Old

Feb 1, 2020 | 05:29 PM

#5

John89

Fleet Mechanic

Joined: Jul 2017

Posts: 1,448

Likes: 163

From: East Texas

Good luck with it. Post up some pictures once you have it installed.

BTW how did you know I was old?

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Old

Feb 3, 2020 | 12:39 AM

#6

black & blue 78/9

Laughing Gas

Joined: Mar 2016

Posts: 757

Likes: 43

From: Cheyenne, Wy

On mine.....
12 oclock...neg coil
3 oclock.....fused power
6 oclock.....ground
9 oclock.....switched light

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