tach wiring help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BamaDave · 09-24-2010, 12:01 PM

I have bought a tach for my 86. The tach came out of a 82 blazer and these are the wires that I got from the blazer. Can anyone tell me where they go. The one with the large black connector is green. The other is a white wire with a red connector. Any help would be appreciated.

SS Delux · 09-24-2010, 12:15 PM

most likely one goes to the tach signal off of the distributor / coil and the other to power it up.

masterlock · 09-24-2010, 12:20 PM

^^ agreed, the one with the spade connector will plug right into the distributor in the location marked tach.

Jonboy · 09-24-2010, 12:39 PM

The white wire with the cap on it goes to the distrubutor.

BamaDave · 10-01-2010, 06:02 AM

Have some conflicting info here. Can anyone clear this up? I would have thought the white (one with the resistor(filter) or whatever that is) goes to the distributor and then to the "tach" connection on the guage. The green one would go to a switched 12v source and to the "12v" or power on the tach. Then I would only have to provide a ground. Any help with this would be appreciated.

BamaDave · 12-29-2010, 04:24 PM

anyone?

Jonboy · 01-05-2011, 04:24 PM

That should be right.

Tommy454 · 01-05-2011, 04:41 PM

The white resistor wire to the dist, green to switched (ignition). If the tach was an option in the cluster it will have a ground provided.

09-24-2010, 12:01 PM	#1
BamaDave Registered User Join Date: May 2010 Location: Shoals, AL Posts: 299	tach wiring help I have bought a tach for my 86. The tach came out of a 82 blazer and these are the wires that I got from the blazer. Can anyone tell me where they go. The one with the large black connector is green. The other is a white wire with a red connector. Any help would be appreciated. Attached Images Last edited by BamaDave; 09-24-2010 at 12:02 PM.

09-24-2010, 12:15 PM	#2
SS Delux Registered User Join Date: Jun 2010 Location: windsor Posts: 290	Re: tach wiring help most likely one goes to the tach signal off of the distributor / coil and the other to power it up.

09-24-2010, 12:20 PM	#3
masterlock Registered User Join Date: Jul 2010 Location: San Diego, CA Posts: 281	Re: tach wiring help ^^ agreed, the one with the spade connector will plug right into the distributor in the location marked tach. __________________ 77 Stepside http://67-72chevytrucks.com/vboard/s...d.php?t=422253

09-24-2010, 12:39 PM	#4
Jonboy Slots go on anything! Join Date: May 2003 Location: Richardson, TX Posts: 5,957	Re: tach wiring help The white wire with the cap on it goes to the distrubutor. __________________ 1974 Jimmy- 5.3/4L80e/NP241

10-01-2010, 06:02 AM	#5
BamaDave Registered User Join Date: May 2010 Location: Shoals, AL Posts: 299	Re: tach wiring help Have some conflicting info here. Can anyone clear this up? I would have thought the white (one with the resistor(filter) or whatever that is) goes to the distributor and then to the "tach" connection on the guage. The green one would go to a switched 12v source and to the "12v" or power on the tach. Then I would only have to provide a ground. Any help with this would be appreciated.

12-29-2010, 04:24 PM	#6
BamaDave Registered User Join Date: May 2010 Location: Shoals, AL Posts: 299	Re: tach wiring help anyone?

01-05-2011, 04:24 PM	#7
Jonboy Slots go on anything! Join Date: May 2003 Location: Richardson, TX Posts: 5,957	Re: tach wiring help That should be right. __________________ 1974 Jimmy- 5.3/4L80e/NP241

01-05-2011, 04:41 PM	#8
Tommy454 Registered User Join Date: Oct 2010 Location: Weeki Wachee , Fl Posts: 112	Re: tach wiring help The white resistor wire to the dist, green to switched (ignition). If the tach was an option in the cluster it will have a ground provided. Last edited by Tommy454; 01-05-2011 at 04:43 PM.



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