hooking up a oe tachometer in my 84 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

86swb · 02-15-2020, 12:38 PM

I have a used tachometer gage that I am putting into my 84' Silverado and was wondering does the 12volt wire from the tachometer hook up to a hot wire or one that comes on with the key switch?

dmack91 · 02-15-2020, 01:57 PM

Hook it up to an ignition switched source so it only has power with the key on.

86swb · 02-15-2020, 04:38 PM

OK, thanks-now all I have to do is find the right wire to hook it to.

ray_mcavoy · 02-15-2020, 05:56 PM

There should be 3 receptacles over on the left side of the fuse box that are marked "IGN". You can plug the tach power wire into any one of them. If you have the factory tach harness, it should already have a plug on the end of the wire that will fit right into one of those receptacles. If not, you can buy a plug that will fit them here --> https://www.summitracing.com/parts/pco-0952pt?rrec=true

86swb · 02-15-2020, 06:18 PM

Thanks, Yes I have the OE wire that came with the tachometer. Appreciate the help guys.

02-15-2020, 12:38 PM	#1
86swb Born a Chevy Man Join Date: Apr 2005 Location: Navarre, Florida Posts: 10,221	hooking up a oe tachometer in my 84 I have a used tachometer gage that I am putting into my 84' Silverado and was wondering does the 12volt wire from the tachometer hook up to a hot wire or one that comes on with the key switch? __________________ John or 86 (Viet Nam combat Vet-BIG RED ONE) '65-'66 1986 Chevy SWB Silverado 1984 Chevy Longbed Silverado New Kia Sportage (Wife's car and she loves it) CHEVY, American made w/pride! If you can read this, YOU NEED TO THANK A TEACHER! If you can read this in ENGLISH, PLEASE THANK A SOLDIER! GOD BLESS AMERICA AND BLESS OUR FIGHTING TROOPS

02-15-2020, 01:57 PM	#2
dmack91 Registered User Join Date: Jan 2011 Location: Redmond, OR Posts: 763	Re: hooking up a oe tachometer in my 84 Hook it up to an ignition switched source so it only has power with the key on. __________________ 68 Chev C20- son has it now 83 K20 - bought from son 70 C20 - in progress

02-15-2020, 04:38 PM	#3
86swb Born a Chevy Man Join Date: Apr 2005 Location: Navarre, Florida Posts: 10,221	Re: hooking up a oe tachometer in my 84 OK, thanks-now all I have to do is find the right wire to hook it to. __________________ John or 86 (Viet Nam combat Vet-BIG RED ONE) '65-'66 1986 Chevy SWB Silverado 1984 Chevy Longbed Silverado New Kia Sportage (Wife's car and she loves it) CHEVY, American made w/pride! If you can read this, YOU NEED TO THANK A TEACHER! If you can read this in ENGLISH, PLEASE THANK A SOLDIER! GOD BLESS AMERICA AND BLESS OUR FIGHTING TROOPS

02-15-2020, 05:56 PM	#4
ray_mcavoy Registered User Join Date: Nov 2009 Location: Sherman, ME Posts: 2,366	Re: hooking up a oe tachometer in my 84 There should be 3 receptacles over on the left side of the fuse box that are marked "IGN". You can plug the tach power wire into any one of them. If you have the factory tach harness, it should already have a plug on the end of the wire that will fit right into one of those receptacles. If not, you can buy a plug that will fit them here --> https://www.summitracing.com/parts/pco-0952pt?rrec=true

02-15-2020, 06:18 PM	#5
86swb Born a Chevy Man Join Date: Apr 2005 Location: Navarre, Florida Posts: 10,221	Re: hooking up a oe tachometer in my 84 Thanks, Yes I have the OE wire that came with the tachometer. Appreciate the help guys. __________________ John or 86 (Viet Nam combat Vet-BIG RED ONE) '65-'66 1986 Chevy SWB Silverado 1984 Chevy Longbed Silverado New Kia Sportage (Wife's car and she loves it) CHEVY, American made w/pride! If you can read this, YOU NEED TO THANK A TEACHER! If you can read this in ENGLISH, PLEASE THANK A SOLDIER! GOD BLESS AMERICA AND BLESS OUR FIGHTING TROOPS



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