What are the three leads on the back of the stock tachometer.

Asked by Dec 12, 2013 at 09:33 PM about the 1973 Chevrolet El Camino

Question type: Maintenance & Repair

My tachometer does not work, every
time I try to connect what I believe to
be the wire that goes to the
distributer the car won't start.

9 Answers

71,025

This is just an educated guess but the tach is most likely grounded to the chassis by the tach's outer casing. One is probably illumination, one tach, and if you have a warning light or gauge incorporated on the face of the tach, possibly the third lead is for that. HTH. -Jim

as I recall the white one is for signal from the ignition....the green one is ground...the yellow one is for illumination and the red one is power~

they do vary depending on the manufacturer~ SUN is the one that I was describing ....here's a cartoon for ye~

1 of 1 people found this helpful.

...well you see that doesn't help....the "roadmap will be in the tachometer box"~

1 of 1 people found this helpful.
115,185

http://www.elcaminocentral.com/showthread.php?t=27190 --- wiring diagrams. I don't see the tach wire in these diagrams but I might be overlooking it. Maybe it will help in some way though.

115,185

http://www.elcaminocentral.com/showthread.php?t=52963 --- this thread states that the tach wire color for the 73 was brown.

115,185

Are you trying to hook up an aftermarket tach?

20

I put a new fuel sinding unit in the gas tank of my 83 el camino ...my gas hand still dosent register wonder what the problem could be?? ..if anybody could help me with that it will b very appriciated ..thanks

2 of 2 people found this helpful.
71,025

If it always reads empty it's a bad ground. If it always reads full it's a bad hot wire. HTH. - Jim

1 of 1 people found this helpful.

Your Answer

El Camino

Looking for a Used El Camino in your area?

CarGurus has 211 nationwide El Camino listings and the tools to find you a great deal.

ZIP:

Chevrolet El Camino Experts

  • #1
    John Brensinger
    Reputation
    360
  • #2
    Js08016
    Reputation
    330
  • #3
    F_O_R
    Reputation
    220
View All

Related Models For Sale

Used Chevrolet Camaro
430 Great Deals out of 30,642 listings starting at $1,450
Used Chevrolet Corvette
179 Great Deals out of 19,691 listings starting at $3,000
Used Chevrolet Impala
538 Great Deals out of 35,138 listings starting at $900
Used Chevrolet Monte Carlo
4 Great Deals out of 1,282 listings starting at $1,488
Used Ford Mustang
585 Great Deals out of 36,176 listings starting at $1,200
Used Dodge Challenger
238 Great Deals out of 22,291 listings starting at $7,750
Used Chevrolet Nova
174 listings
Used Dodge Charger
413 Great Deals out of 28,283 listings starting at $2,490
Used Ford Ranchero
53 listings

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.