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Old 05-19-2002, 11:05 AM   #1
ty1295
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Post Need DASH help ASAP

My truck had the factory, low option, no guage, just idiot light dash.

I got a dash with the guages, and added my own tach to it (turned out nice BTW)..

Anyways, I have the old one out, and new one ready to go in. It appears some of the wires are different from the plug. Can anybody verify I can just plug in harness and go (minus maybe a few sensors on engine)???

Before I start switching wires around.

I sure hope this is plug and play.



------------------
Jeff Scott
'70 GMC Stepside, Short box
'67 Camaro
'63 Nova
'92 GMC typhoon

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Old 05-19-2002, 11:19 AM   #2
Zkast
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EDITED:
Read futher down, Major changes in instrument cluster wiring.. DONT plug it in yet.

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'71 LWB
350/350T, PS/PB
Special options? Yes, RUST... Need some?
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[This message has been edited by Zkast (edited May 19, 2002).]
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Old 05-19-2002, 11:20 AM   #3
ty1295
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In particular I am noticing the old one (no options) the pins go to dash lights.

Same pins on new one, go to battery guage...

Might just plug it in, water hose ready, and hope it works...



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Jeff Scott
'70 GMC Stepside, Short box
'67 Camaro
'63 Nova
'92 GMC typhoon

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Old 05-19-2002, 11:51 AM   #4
71Chev
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Look at Paul's tips page. http://www.gmcpauls.com/Tech%20Tips1.htm

You have to change the connectors around in the harness plug that plugs into the dash cluster. When changing from idiot to gauges.

------------------
  • 71 Chevy CST Long Fleet 350/350/3.07 leaf rear.

[This message has been edited by 71Chev (edited May 19, 2002).]
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Old 05-19-2002, 11:54 AM   #5
mikep
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Do you have a pic of your new dash. I am considering adding a tach to mine and the factory tach seems beyond worthless with its 5000 rpm range. I'd like an idea when I'm running over 7000.
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Old 05-19-2002, 12:09 PM   #6
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Thanks for the heads-up 71 Chev, learn something new everyday

mikep, here's a shot of my dash w/tach
I've also mounted a 3.5 dia tach in the factory hole but I like the bigger tach with light myself.
http://www.zkast.com/images/P5180002.JPG

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Old 05-19-2002, 12:58 PM   #7
ty1295
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Talking

Send me your email, I will send you picture.

Got guage almost done, just lacking voltage wires...

Too bad I found the digram AFTER I figured it out.

Atleast I could double check myself.

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Jeff Scott
'70 GMC Stepside, Short box
'67 Camaro
'63 Nova
'92 GMC typhoon

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Old 05-19-2002, 01:12 PM   #8
LILREDGMC
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The basic plug is pin to pin different from the deluxe. I sat and checked the wiring with a voltage source one day. The easiest is to go with a deluxe harness etc, but I imagine you can change pin to pin to get where you want. So I've learned as well watch that you have a good ground as you go.
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Old 05-19-2002, 01:49 PM   #9
Longhorn Man
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If you just plug it in, your dash will not work right, and you'll be looking for a replacement fuel guage. Trust me.

------------------
'69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man
I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it.
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Old 05-19-2002, 01:59 PM   #10
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if your swithing out gauges from dummy lights to all gauges the wiring harness is differnt will not work .the way i have done it is get harness that is wired for all gauges out of another truck you need the harness under the dash, with fuse block its not hard to switch out kinda like pulling plug wires one at a time same thing under dash when you switch out. make sure if you have auto that you get a harness with auto for the nuturel safty switch oc steering colum.

------------------
69 SHORT FLEET SIDE MAROON RESTORED.
71 LONG FLEET RESTORED D/DRIVER. BUT ALWAYS LOOKING TO IMPROVE 68 SHORT UNDER CONSTRUCTION

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Old 05-19-2002, 03:31 PM   #11
BIG ORANGE
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You got to change the underdash harness and the forward light harness/plus engine I think.Good Luck

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1970,68,90 swb Little BUCKS one day
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Old 05-19-2002, 06:25 PM   #12
RALLY FAST
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negative big 'o .the only difference under the hood in regards to the harness is g.m.c has double pins for the 4 head lights. chevy is all the same, weather or not you have warning lights or all gauges in the cab the wiring harness does not have to be changed .after putting in the harness under the dash you should just plug in your two piece harness under the hood to your new harness.

------------------
69 SHORT FLEET SIDE MAROON RESTORED.
71 LONG FLEET RESTORED D/DRIVER. BUT ALWAYS LOOKING TO IMPROVE 68 SHORT UNDER CONSTRUCTION


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Old 05-19-2002, 07:13 PM   #13
Longhorn Man
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Hmmmm, I'll have to look at my schematics...I was under that impression too.

------------------
'69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man
I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it.
FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite.
E-mail longhornmail@yahoo.com
My name is Andy...not Randy...I'm in Ohio...Not Illinois...close enough?
Columbus Ohio


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Old 05-19-2002, 08:22 PM   #14
BUXMAN66
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if you refer to paul's tech tips you'll notice that you just rearrange the wire leads .the only new wires to run will be the temp.guage,voltage,and a new powr. lead from the connector over by your battery.some of the old wires you just need to clip and tape.just went through this myself just a cpl. months ago.those little clips at the plug end are a bi@#h sometimes also.if you break a clip,(you'll also need a couple new ones also)go to you're local dealership they have 'em at the parts cntr.i tried all over town to match up the electrical clip but no one had even seen such a bird!

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'68 swb 350/350 w/edelbrock total performance-performer pkg.ceramic headers,2.5" delta-flow 40 series flowmstrs.restored guage dash,interior,pioneer shaft-style stereo w/advent 300w 3way 6x9's,lift-up shock mount tonneau cover.drums w/6 lug alum. wheels w/knock-off's.


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