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#1 |
2A674 Tank Rat
Join Date: Jul 2003
Location: Maryland Heights, Mo.
Posts: 626
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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
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'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 |
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#2 |
Account Suspended
Join Date: Mar 2003
Location: ** THE FALL GUY **CHICAGO IL
Posts: 5,883
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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. |
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#3 |
Progress = 0%
Join Date: Nov 2001
Location: Kansas City, MO
Posts: 2,108
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Jason - '67 GMC swb | '57 Bel-Air 4dr hardtop | '56 210 4dr Wagon | 2000 GMC Sierra |
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#4 |
Registered User
Join Date: Sep 2002
Location: long island, new york
Posts: 1,333
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mine auto gage by auto meter -kyle
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1986 c-10 swb 5/7 drop 20'' coys 1958 belair 2door |
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#5 |
Formerly yellow72custom
Join Date: May 2001
Location: Austin, TX
Posts: 7,531
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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 ![]()
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'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 |
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#6 |
Registered User
Join Date: Jul 2001
Location: Oxnard, CA
Posts: 143
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Good question, but how do you wire ti up.
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1969 GMC S/B S/S 3" drop |
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#7 |
2A674 Tank Rat
Join Date: Jul 2003
Location: Maryland Heights, Mo.
Posts: 626
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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.
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'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 |
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#8 |
Formerly yellow72custom
Join Date: May 2001
Location: Austin, TX
Posts: 7,531
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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.
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'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 |
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#9 |
2A674 Tank Rat
Join Date: Jul 2003
Location: Maryland Heights, Mo.
Posts: 626
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It still has the original points type distributor. Is there a Tach connector on it?
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'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 |
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#10 |
Account Suspended
Join Date: Mar 2003
Location: ** THE FALL GUY **CHICAGO IL
Posts: 5,883
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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. |
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#11 |
Try spinnin 4 rear tars
Join Date: Sep 2003
Location: Salt Lake City, Utah
Posts: 757
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it IS the neg side of the coil. Just crimp a connector on the end of the wire and stick it on there
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SWEET7T 1970 C10, 2wd, LB, 307/TH350/3.08. PS, PB |
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