Factory Tach Cluster - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BIGBLU 72 · 12-21-2008, 12:45 AM

Im changing the cluster in my 72 jimmy from the basic gauge cluster to cluster with a factory tach. i was wondering first if i have to change the plug-in from the wiring harness to match the new cluster? and also how to hook up the vaccum gauge

thanks DAN

bouncytruck · 12-21-2008, 01:09 AM

There is a separate wire harness for the tach. You can get it from just about any vendor. I don't know about the vacuum.

Jtrux · 12-21-2008, 01:22 AM

Or you can just buy some wire and spade connectors and do it yourself, up to you.

As far as vacuum, I guess you could tie it into your carb or intake.

badpeanut · 12-22-2008, 01:07 AM

Quote:

Originally Posted by BIGBLU 72

Im changing the cluster in my 72 jimmy from the basic gauge cluster to cluster with a factory tach. i was wondering first if i have to change the plug-in from the wiring harness to match the new cluster? and also how to hook up the vaccum gauge

thanks DAN

Here is some good info: http://67-72chevytrucks.com/vboard/s...d.php?t=313785

72armyswbtruck · 12-22-2008, 01:15 AM

If your dash is currently the 3 guage set-up, then there is some re--wiring/ re-pinning of the wiring harness. IF you have the 5 guage cluster currently then it is mainly a plug and play. Except you will need the tach wiring harness which is around $25.00 from most of the vendors on this site.
Do a search under the Tech area and you will find a write up on how to do it correctly and a wiring diagram.

12-21-2008, 12:45 AM	#1
BIGBLU 72 Registered User Join Date: Dec 2008 Location: Ashland, KY Posts: 700	Factory Tach Cluster Im changing the cluster in my 72 jimmy from the basic gauge cluster to cluster with a factory tach. i was wondering first if i have to change the plug-in from the wiring harness to match the new cluster? and also how to hook up the vaccum gauge thanks DAN

12-21-2008, 01:09 AM	#2
bouncytruck SKINNY TIRES RULE! Join Date: Sep 2001 Location: Bothell, WA Posts: 11,049	Re: Factory Tach Cluster There is a separate wire harness for the tach. You can get it from just about any vendor. I don't know about the vacuum. __________________ bouncytruck 1972 K5 The Hauler 1994 K1500 Suburban The Daily2010 Kia Soul Wife's Ride2014 Fiat 500L

12-21-2008, 01:22 AM	#3
Jtrux I'm a poor spectator Join Date: Aug 2006 Location: San Antonio, Tx Posts: 2,287	Re: Factory Tach Cluster Or you can just buy some wire and spade connectors and do it yourself, up to you. As far as vacuum, I guess you could tie it into your carb or intake. __________________ 2006 Jeep Unlimited IMPACT ORANGE 1993 Chevy 2500 4x4 ExCab LWB 454/NV4500 Tow rig 1977 Ford F100 2x4 LWB 1st truck I owned, still have it!!! 1979 Ford F150 4x4 SWB Built Ford Tough!!! 1971 Chevy Blazer 350 / SM465 / NP205 UNDER CONSTRUCTION Soon to have a LQ4 6.0!!! Last edited by Jtrux; 12-21-2008 at 01:22 AM.

12-22-2008, 01:15 AM	#5
72armyswbtruck Registered User Join Date: Feb 2004 Location: Idaho Posts: 4,034	Re: Factory Tach Cluster If your dash is currently the 3 guage set-up, then there is some re--wiring/ re-pinning of the wiring harness. IF you have the 5 guage cluster currently then it is mainly a plug and play. Except you will need the tach wiring harness which is around $25.00 from most of the vendors on this site. Do a search under the Tech area and you will find a write up on how to do it correctly and a wiring diagram. __________________ "Remember, They can Kill You, but they can't eat You, That's against the law!!!!!!!!!"

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