How to ADD a Tach - The 1947 - Present Chevrolet & GMC Truck Message Board Network

TsgtE662 · 12-24-2003, 06:04 PM

I want to add a Tach to my truck. But not sure how I would wire it up exactly. Does anyone know of an aftermarket tach that would fit in the middle of the instr cluster panel? It is a standard instr cluster without the tach and only the three other gauges. I would like to "fill the holes" with appropiate gauges. I have never done this before and would like to do it.

Thanks

*rage'nrat638* · 12-24-2003, 06:14 PM

here you go....check this tread
http://67-72chevytrucks.com/vboard/s...+new+tach+dash

Slammed67 · 12-24-2003, 06:16 PM

More options.......

http://64.246.42.114/vboard/showthre...threadid=82148

special70gmc · 12-24-2003, 07:10 PM

mine auto gage by auto meter -kyle

lukecp · 12-24-2003, 07:28 PM

Its not very hard....just take apart the dash and slice appropiatley

A hole say, jig saw, or a dremel with a cutoff wheel works well.

I have had good luck with sunpro guages....but if you can afford better, get some Autometers

photoglg · 12-24-2003, 10:14 PM

Good question, but how do you wire ti up.

TsgtE662 · 12-24-2003, 11:44 PM

Aside from finding a tach that would fit and other new gauges to replace the old, how to wire it/them is my main mental challenge with this. I'm not sure on that part. I am kind of Electrically challenged mostly.

lukecp · 12-25-2003, 12:02 AM

Wiring it up is dead simple....just follow the directions that come with the tach. Four wires is all it takes....the instructions make it ultra easy.

Black wire-ground (any clean metal surface on the truck)
Green wire-tach feed (TACH terminal on HEI)
Red wire-power, any source that is hot with the ignition is on (IGN UNFUSED terminal in fusebox works great)
White wire-Backlighting wire, i tapped into the wire that lights up the heater controls light bulb.

Very, very easy to do. Only took me 20 minutes or so when i installed it on the steering collumn.

TsgtE662 · 12-25-2003, 01:02 AM

It still has the original points type distributor. Is there a Tach connector on it?

*rage'nrat638* · 12-25-2003, 01:12 AM

it's the negative side of the coil...is where the tach hook's up....
i think

go to your local pep boy's the tach 3 3/8 size is 42.00...
follow the instuctions.....if you can type and use the computer you can hook this up.......

SWEET7T · 12-25-2003, 03:06 PM

it IS the neg side of the coil. Just crimp a connector on the end of the wire and stick it on there

12-24-2003, 06:04 PM	#1
TsgtE662 2A674 Tank Rat Join Date: Jul 2003 Location: Maryland Heights, Mo. Posts: 626	How to ADD a Tach I want to add a Tach to my truck. But not sure how I would wire it up exactly. Does anyone know of an aftermarket tach that would fit in the middle of the instr cluster panel? It is a standard instr cluster without the tach and only the three other gauges. I would like to "fill the holes" with appropiate gauges. I have never done this before and would like to do it. Thanks __________________ '92 GMC Sierra, Sportside, 2wd, 350, Black '92 Chevy Silverado Extended Cab 4 x 4, Blue USAFR = 2A674 = Aircraft Fuel Systems Maintenance i.e. Tank Rat

12-24-2003, 06:14 PM	#2
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	here you go....check this tread http://67-72chevytrucks.com/vboard/s...+new+tach+dash Last edited by rage'nrat638; 07-12-2007 at 07:09 AM.

12-24-2003, 06:16 PM	#3
Slammed67 Progress = 0% Join Date: Nov 2001 Location: Kansas City, MO Posts: 2,108	More options....... http://64.246.42.114/vboard/showthre...threadid=82148 __________________ Jason - '67 GMC swb \| '57 Bel-Air 4dr hardtop \| '56 210 4dr Wagon \| 2000 GMC Sierra

12-24-2003, 07:10 PM	#4
special70gmc Registered User Join Date: Sep 2002 Location: long island, new york Posts: 1,333	mine auto gage by auto meter -kyle Attached Images __________________ 1986 c-10 swb 5/7 drop 20'' coys 1958 belair 2door

12-24-2003, 07:28 PM	#5
lukecp Formerly yellow72custom Join Date: May 2001 Location: Austin, TX Posts: 7,531	Its not very hard....just take apart the dash and slice appropiatley A hole say, jig saw, or a dremel with a cutoff wheel works well. I have had good luck with sunpro guages....but if you can afford better, get some Autometers __________________ '72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg

12-24-2003, 10:14 PM	#6
photoglg Registered User Join Date: Jul 2001 Location: Oxnard, CA Posts: 143	Good question, but how do you wire ti up. __________________ 1969 GMC S/B S/S 3" drop

12-24-2003, 11:44 PM	#7
TsgtE662 2A674 Tank Rat Join Date: Jul 2003 Location: Maryland Heights, Mo. Posts: 626	Aside from finding a tach that would fit and other new gauges to replace the old, how to wire it/them is my main mental challenge with this. I'm not sure on that part. I am kind of Electrically challenged mostly. __________________ '92 GMC Sierra, Sportside, 2wd, 350, Black '92 Chevy Silverado Extended Cab 4 x 4, Blue USAFR = 2A674 = Aircraft Fuel Systems Maintenance i.e. Tank Rat

12-25-2003, 12:02 AM	#8
lukecp Formerly yellow72custom Join Date: May 2001 Location: Austin, TX Posts: 7,531	Wiring it up is dead simple....just follow the directions that come with the tach. Four wires is all it takes....the instructions make it ultra easy. Black wire-ground (any clean metal surface on the truck) Green wire-tach feed (TACH terminal on HEI) Red wire-power, any source that is hot with the ignition is on (IGN UNFUSED terminal in fusebox works great) White wire-Backlighting wire, i tapped into the wire that lights up the heater controls light bulb. Very, very easy to do. Only took me 20 minutes or so when i installed it on the steering collumn. __________________ '72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg

12-25-2003, 01:02 AM	#9
TsgtE662 2A674 Tank Rat Join Date: Jul 2003 Location: Maryland Heights, Mo. Posts: 626	It still has the original points type distributor. Is there a Tach connector on it? __________________ '92 GMC Sierra, Sportside, 2wd, 350, Black '92 Chevy Silverado Extended Cab 4 x 4, Blue USAFR = 2A674 = Aircraft Fuel Systems Maintenance i.e. Tank Rat

12-25-2003, 01:12 AM	#10
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	it's the negative side of the coil...is where the tach hook's up.... i think go to your local pep boy's the tach 3 3/8 size is 42.00... follow the instuctions.....if you can type and use the computer you can hook this up....... Last edited by rage'nrat638; 12-25-2003 at 01:15 AM.

12-25-2003, 03:06 PM	#11
SWEET7T Try spinnin 4 rear tars Join Date: Sep 2003 Location: Salt Lake City, Utah Posts: 757	it IS the neg side of the coil. Just crimp a connector on the end of the wire and stick it on there __________________ SWEET7T 1970 C10, 2wd, LB, 307/TH350/3.08. PS, PB

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