instrument cluster - The 1947 - Present Chevrolet & GMC Truck Message Board Network

frankyjoet · 11-04-2008, 01:57 AM

Have 73 gmc p/u. Am installing an inst. cluster that is different than original. This replacement has an electric oil gauge. Would like to know where the sender wire is hooked up to, the wire in the cluster plug or directly to the printed circuit.

thanx
joet

Prong · 11-04-2008, 06:48 AM

Since yours came with an amp gauge originally, you're also going to have to modify the amp gauge wiring to convert it to the volt gauge, otherwise you'll have crispy wiring as soon as you hit the key.

f.monroe · 11-04-2008, 09:15 AM

Be careful changing clusters from year to year . Search the board for info since I seem to remember,like Prong stated above, that if you change from an amp meter to a volt gauge , it can cause some track or wires to burn . I think bigblock73 has a writeup on the year differences on his website . Definitely search it a little before you swap it .
Frank

**Captkaos** · 11-04-2008, 05:30 PM

You don't want to use a non 73-75 cluster in a 73-75 unless you plan on rewiring the cab portion. This will cause a serious meltdown. Definitely don't plug it in with power to it.

*78 Chevyrado* · 11-04-2008, 07:04 PM

Here's some good info i found. It's about tachometers, but has info about the amp guage and swapping oil psi guages too.

http://www.73-87.com/7387garage/inte...achometers.htm

11-04-2008, 01:57 AM	#1
frankyjoet Registered User Join Date: Feb 2008 Location: Surprise, Ariz. Posts: 186	instrument cluster Have 73 gmc p/u. Am installing an inst. cluster that is different than original. This replacement has an electric oil gauge. Would like to know where the sender wire is hooked up to, the wire in the cluster plug or directly to the printed circuit. thanx joet Last edited by frankyjoet; 11-04-2008 at 01:58 AM.

11-04-2008, 06:48 AM	#2
Prong Registered User Join Date: May 2007 Location: CO Posts: 475	Re: instrument cluster Since yours came with an amp gauge originally, you're also going to have to modify the amp gauge wiring to convert it to the volt gauge, otherwise you'll have crispy wiring as soon as you hit the key.

11-04-2008, 09:15 AM	#3
f.monroe Senior Member Join Date: May 2004 Location: Caldwell,Tx. Posts: 3,648	Re: instrument cluster Be careful changing clusters from year to year . Search the board for info since I seem to remember,like Prong stated above, that if you change from an amp meter to a volt gauge , it can cause some track or wires to burn . I think bigblock73 has a writeup on the year differences on his website . Definitely search it a little before you swap it . Frank __________________ Born and proudly residing in a Red State ! Last edited by f.monroe; 11-04-2008 at 09:16 AM.

11-04-2008, 05:30 PM	#4
Captkaos www.73-87chevytrucks.com Join Date: Dec 1999 Location: Birmingham, AL Posts: 6,935	Re: instrument cluster You don't want to use a non 73-75 cluster in a 73-75 unless you plan on rewiring the cab portion. This will cause a serious meltdown. Definitely don't plug it in with power to it. __________________ Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) - SOLD 1987 R10 twin turbo LS 1991 R3500 SRW CrewCab 1985 K5 diesel swapped project 1989 K5 2WD conversion w/ Vette susp Project Captkaos Customs 73-87chevytrucks.com

11-04-2008, 07:04 PM	#5
78 Chevyrado Account Suspended Join Date: Dec 2007 Location: Unnapreciative, Trollville Posts: 2,079	Re: instrument cluster Here's some good info i found. It's about tachometers, but has info about the amp guage and swapping oil psi guages too. http://www.73-87.com/7387garage/inte...achometers.htm



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