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09-28-2004, 11:25 PM
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#1 |
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Senior Member
Join Date: Sep 2004
Location: CANADA
Posts: 1,681
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Wiring Change
Do I have to change the wiring harnass in the cab to go from warning lights to the factory gauges dash .The truck is a 72 gmc 1-ton?
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09-28-2004, 11:29 PM
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#2 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
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Yup. You will fry the fuel guage and have real goofy dash lights if you try to just plg it in w/out mods. You can also fry the sending unit in the tank.
Ask me how I know. 
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09-28-2004, 11:33 PM
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#3 |
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Still drivin' a Rat Rod
Join Date: Sep 2004
Location: Monett Missouri
Posts: 4,925
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Don't forget to unplug the battery either
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Rusty Member #13872 Instead of saying.....you are a discomfort in the back of my front.....one should be able to say...... you are a pain in the *a$#* 71 GMC LWB 49 Chevy 85 Chevy G20 Check out my website |
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09-28-2004, 11:34 PM
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#4 |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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i think on gmcpauls website he has instructions on what you have to do to make the change
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71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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09-28-2004, 11:37 PM
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#5 |
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Senior Member
Join Date: Sep 2004
Location: CANADA
Posts: 1,681
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BEEN THERE DONE THAT HEY.Is hard to change the harnass in the dash to in stall the full gagues?I bought a 70 gmc 2500 yesterday that i could swap the wiring from what do i need to change?The 2500 is another parts truck
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09-28-2004, 11:56 PM
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#6 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
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No idea. I totaled my only guage-less truck before I had a chance to get it right.
The funny thing is, I refuse to use the old stock guages...so now I have aftermarket ones in the stock bezel. |
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10-02-2004, 12:35 AM
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#7 |
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Senior Member
Join Date: Sep 2004
Location: CANADA
Posts: 1,681
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ttt
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10-02-2004, 12:49 AM
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#8 |
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Lovin' Life in Miss.!
Join Date: Mar 2004
Location: Puckett, Mississippi
Posts: 1,937
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Think if you got the proper circuit board for the dash and the right sending units it would be pretty easy with a factory wiring diagram. I managed to use the temp warning light in my dash AND the factory temp gauge. I got the light wired to the sender in the head and the gauge to the sender in the manifold.
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The truck... you hear that? No really, you did hear that?!!! |
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10-02-2004, 01:27 AM
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#9 |
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Senior Member
Join Date: Sep 2004
Location: CANADA
Posts: 1,681
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i have the full gauge dash with board to install how about the voltage gauge?
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10-02-2004, 10:32 AM
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#10 |
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Registered User
Join Date: Mar 2004
Location: Alabama
Posts: 703
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Here's a link to a tech tip on the home page that may help.
http://67-72chevytrucks.com/techtips...lectric_2.html
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1972 C10 SWB 350 / T400 1972 SWB GMC 350/T350 1972 Cheyenne 20 super "long horn". 402BB / T400 1972 Suburban C10 Deluxe 350 / T350 and a few more.. http://www.myspace.com/afew72s |
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10-02-2004, 04:16 PM
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#11 |
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Senior Member
Join Date: Dec 2000
Location: Indiana
Posts: 3,074
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You can move the wires in your loom plug and then add 2 new wires with 4amp inline fuses for the ameter to work. If you have any questions feel free to email me.
http://www.gmcpauls.com/Tech%20Tips1.htm
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71 Chevy CST Long Fleet 350/350/3.07 leaf rear. |
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10-02-2004, 04:29 PM
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#12 |
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Senior Member
Join Date: Sep 2004
Location: CANADA
Posts: 1,681
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thanks i think the change is worth a try
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10-03-2004, 09:51 PM
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#13 | |
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Senior Member
Join Date: Sep 2004
Location: CANADA
Posts: 1,681
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Quote:
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