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

67stepside · 03-13-2005, 03:46 PM

Hey I have a ? I got a tach dash at the Louisville swap meet yesterday. Where does the wiring harness go to? The one i got has been cut so I only have the end on the tach. Thanks

jhow66 · 03-13-2005, 05:06 PM

Give me the wire color.

JimKshortstep4x4 · 03-13-2005, 07:54 PM

The factory harness had a pink wire for the 12 volt terminal and it plugged into the fuse panel in the "Ignition Unfused" location. The other wire was brown and it went to the negative side of the ignition coil. If you have HEI then it should plug into the terminal on the coil marked "Tach".

The tach gets its ground through the instrument housing.

Jim

67stepside · 03-13-2005, 07:58 PM

one is brown and one is pink. on the back of the tach it is labeled "coil" and "12 volt". the brown is on the coil side and pink is 12 volt. is that all i need to do is wire it to the coil and a power source?

**jamie72** · 03-13-2005, 08:16 PM

if its a factory tach, coil wire go`s to the coils or hei, and the other go`s to your fusebox on a keyed hot plug in... so where did you find that? i missed it, i was there friday and saturday....but did frind some good deals
good luck with the tach.
jamie

67stepside · 03-13-2005, 08:37 PM

Just as i came out of the little back room I turned right. On the corner was a guy with a lot of 67-72 truck parts, had a 67-68 white grille standing up against wall. Any way right next to him was a guy that had one sitting on his table, I think he also had an old maybe 65 Impala convertible for sale, pretty rough. I asked him how much and he said $200, I walked away and came back in about 5 min. and offered him $150, got it bought for $160. Hope it works!!

**jamie72** · 03-13-2005, 09:30 PM

yea i know the guy his name is bill i think, i was in the other small buliding, sounds like a good deal, good luck with it.
jamie

67stepside · 03-13-2005, 10:32 PM

Thanks for the info. John

03-13-2005, 03:46 PM	#1
67stepside Registered User Join Date: Jan 2002 Location: Columbus, IN. USA Posts: 140	Tach Wiring Hey I have a ? I got a tach dash at the Louisville swap meet yesterday. Where does the wiring harness go to? The one i got has been cut so I only have the end on the tach. Thanks

03-13-2005, 05:06 PM	#2
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	Give me the wire color. __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer

03-13-2005, 08:16 PM	#5
jamie72 Senior Member Join Date: Apr 2000 Location: madison indiana Posts: 3,839	if its a factory tach, coil wire go`s to the coils or hei, and the other go`s to your fusebox on a keyed hot plug in... so where did you find that? i missed it, i was there friday and saturday....but did frind some good deals good luck with the tach. jamie __________________ jamie72 72 BB cheyenne -- Restoration getting started.. member #807 http://www.myspace.com/whitetailobsession www.antlertalk.com

03-13-2005, 09:30 PM	#7
jamie72 Senior Member Join Date: Apr 2000 Location: madison indiana Posts: 3,839	yea i know the guy his name is bill i think, i was in the other small buliding, sounds like a good deal, good luck with it. jamie __________________ jamie72 72 BB cheyenne -- Restoration getting started.. member #807 http://www.myspace.com/whitetailobsession www.antlertalk.com

03-13-2005, 07:54 PM	#3
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	The factory harness had a pink wire for the 12 volt terminal and it plugged into the fuse panel in the "Ignition Unfused" location. The other wire was brown and it went to the negative side of the ignition coil. If you have HEI then it should plug into the terminal on the coil marked "Tach". The tach gets its ground through the instrument housing. Jim

03-13-2005, 07:58 PM	#4
67stepside Registered User Join Date: Jan 2002 Location: Columbus, IN. USA Posts: 140	one is brown and one is pink. on the back of the tach it is labeled "coil" and "12 volt". the brown is on the coil side and pink is 12 volt. is that all i need to do is wire it to the coil and a power source?

03-13-2005, 08:37 PM	#6
67stepside Registered User Join Date: Jan 2002 Location: Columbus, IN. USA Posts: 140	Just as i came out of the little back room I turned right. On the corner was a guy with a lot of 67-72 truck parts, had a 67-68 white grille standing up against wall. Any way right next to him was a guy that had one sitting on his table, I think he also had an old maybe 65 Impala convertible for sale, pretty rough. I asked him how much and he said $200, I walked away and came back in about 5 min. and offered him $150, got it bought for $160. Hope it works!!

03-13-2005, 10:32 PM	#8
67stepside Registered User Join Date: Jan 2002 Location: Columbus, IN. USA Posts: 140	Thanks for the info. John



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