G3GM
Would you like to react to this message? Create an account in a few clicks or log in to continue.

G3GM 1973 to 1977 A-bodys. Chevelles, Monte Carlos, El Caminos, Laguna, 442, Cutlass, Malibu, GTO, LeMans, Century, Regal, Grand Am, Grand Prix, Sprint, Gran Sport, Can Am, Hurst-olds, and other 73-77 A-bodies


Dumb factory tach question.

3 posters

G3GM :: G3 Tech :: Electrical

Go down

Dumb factory tach question. Empty Dumb factory tach question.

Post by Roadcaptain S3 Sat May 14, 2016 8:39 am

I just picked up factory gauges with tach. Not sure if/when I'll install yet.

Dumb factory tach question. S-l1600

Dumb factory tach question. S-l1600


I currently have the base sweep gauges. What do I have to do hook up the tach?
Roadcaptain S3
Roadcaptain S3
Donating Member
Donating Member

Street Cred : 26

Back to top Go down

Dumb factory tach question. Empty Re: Dumb factory tach question.

Post by Oldschool454 Sat May 14, 2016 8:52 am

There's a thread that talks about this whole process and what's involved in rewiring your dash harness. I did this in my car as well. The thread has pictures of how the wiring needs to be. "SWITCHING FROM SWEEP TO ROUND GAUGE CLUSTER RE-WIRE".
Oldschool454
Oldschool454
G3GM Member
G3GM Member

Street Cred : 5

Back to top Go down

Dumb factory tach question. Empty Re: Dumb factory tach question.

Post by Oldschool454 Sat May 14, 2016 9:01 am

...and just cross your fingers that the tach actually works lol
Oldschool454
Oldschool454
G3GM Member
G3GM Member

Street Cred : 5

Back to top Go down

Dumb factory tach question. Empty Re: Dumb factory tach question.

Post by Roadcaptain S3 Sat May 14, 2016 9:08 am

I've got this one, and a later one with the "fuel economy" gauge in place of the tach. So if anything ain't working I can probably swap 'em out.

But this one is in pretty good shape and the owner said it was in storage wrapped in plastic for twenty years.

We'll see...
Roadcaptain S3
Roadcaptain S3
Donating Member
Donating Member

Street Cred : 26

Back to top Go down

Dumb factory tach question. Empty Re: Dumb factory tach question.

Post by Hawk03 Sat May 14, 2016 10:33 am

I did this too and it wasn't too terribly difficult. You will need to run a signal wire from the tach to the correct pin in the cluster plug. You could probably run the signal wire directly to the post on the back of the tach too.

https://www.g3gm.com/t57-switching-from-sweep-to-round-gauge-cluster-re-wire


Last edited by Hawk03 on Sat May 14, 2016 12:25 pm; edited 1 time in total (Reason for editing : thoughts)
Hawk03
Hawk03
G3GM Enthusiast
G3GM Enthusiast

Street Cred : 18

Back to top Go down

Dumb factory tach question. Empty Re: Dumb factory tach question.

Post by Roadcaptain S3 Sat May 14, 2016 12:22 pm

Gracias!
Roadcaptain S3
Roadcaptain S3
Donating Member
Donating Member

Street Cred : 26

Back to top Go down

Dumb factory tach question. Empty Re: Dumb factory tach question.

Post by Sponsored content


Sponsored content


Back to top Go down

Back to top

- Similar topics

G3GM :: G3 Tech :: Electrical

 
Permissions in this forum:
You cannot reply to topics in this forum