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#1 |
Registered User
Join Date: Aug 2005
Location: Ottawa County, Michigan
Posts: 63
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Help with Instrument Panel
I have a 72 K5 Blazer 4X4 with a 4 speed manual top loader. The instrument panel is the basic system with idiot lights.
Question: Can I swap it out with an instrument panel with gauges using the SAME wiring harness? thanks in advance. |
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#2 |
Senior Member
![]() Join Date: Jan 2001
Location: Orem, Utah
Posts: 7,922
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Re: Help with Instrument Panel
I believe you can. GMC Paul's has some info. It's halfway down the page:
http://gmcpauls.com/Tech%20Tips1.htm |
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#3 |
Registered User
Join Date: Aug 2005
Location: Ottawa County, Michigan
Posts: 63
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Re: Help with Instrument Panel
Thanks a lot... I'll look into that.
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#4 |
Senior Member
![]() Join Date: May 2006
Location: Philadelphia, Pa. 19454
Posts: 9,516
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Re: Help with Instrument Panel
I think the idoit light harness may be missing a couple wires, dunno. But my gauge harness was trash with the fuse box rusted. Bought a used one in the classifieds and reinstalled it
Let us know what you find out, would be good to know
__________________
Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim |
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#5 |
Registered User
Join Date: Aug 2005
Location: Ottawa County, Michigan
Posts: 63
|
Re: Help with Instrument Panel
Well, I tried switching to the full gauge cluster. It didn't work at all... maybe a few lights came on but that's it.
I switched back to the original cluster and now the gas gauge does not work. |
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#6 |
Senior Member
![]() Join Date: May 2006
Location: Philadelphia, Pa. 19454
Posts: 9,516
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Re: Help with Instrument Panel
Did you reinstall the ground clip
__________________
Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim |
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#7 |
Registered User
Join Date: Jun 2009
Location: Glen Ellen, CA
Posts: 15
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Re: Help with Instrument Panel
I think there is a difference in the wires that are in the gauge/cluster connector between the gauge cluster and the idiot light cluster. At least that is what the Painless wiring harness instructions for the truck say.
On page 14 of the Painless Wiring harness manual for 10206 there is a table showing the differences. You can download the manual from Summit Racing by looking up Painless 10206. The table basically says this: Color Port # No. Connect to DASH WITH GAUGES Red 1 Ammeter + Tan 2 975 Brake Input Red/Wht 3 935 Gauges B+ (Brake, Temp, Fuel) Pnk 4 939 Fuel Sender Lt.Grn 5 921 Temp Light Ground (Sender) Grn/Blk 6 Temp Gauge Sender Blk 7 Ground Gry 8 930 Dash Lights B+ Blu 9 938 Right Turn Lt.Blu 10 937 Left Turn Grn 11 936 High Beam Red/Blk 12 Ammeter DASH PANEL WITH LIGHTS Blu/Blk 1 922 Oil Pressure Tan 2 975 Brake Warning Switch 3 Open Pnk 4 939 Fuel Sender Grn 5 921 Temp Light Switch Blk 6 Ground Red/Wht 7 935 Dash B+ Brn 8 Generator Light Lt.Grn 9 936 High Beam Lt.Blu 10 937 Left Turn Blu 11 938 Right Turn Gry 12 930 Dash Lights Sorry for the crappy formatting, but I just cut and pasted from the PDF to here. I hope this helps. It should at least show you which wires are different. |
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#8 |
Registered User
Join Date: Aug 2005
Location: Ottawa County, Michigan
Posts: 63
|
Re: Help with Instrument Panel
Thanks a lot for the info. This is definitely helpful.
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#9 |
Registered User
Join Date: Aug 2005
Location: Ottawa County, Michigan
Posts: 63
|
Re: Help with Instrument Panel
I did locate the ground wire and it was connected. I did remove it and clean up the contact location. I'll put it back together here soon and see if that helps.
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#10 |
Senior Member
![]() Join Date: May 2006
Location: Philadelphia, Pa. 19454
Posts: 9,516
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Re: Help with Instrument Panel
There is a very good colored schmatic down in the electrical section, someone spent a lot of time writing that up, very easy to follow
__________________
Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim |
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#11 |
Registered User
Join Date: Aug 2005
Location: Ottawa County, Michigan
Posts: 63
|
Re: Help with Instrument Panel
I checked my dash ground and it is good. I hooked the cluster up again and no change. I took leads from a battery and connected them directly to the fuel gauge lugs and the needle returned to the "empty" location on the dial. I also noticed that when the blazer is running, the parking lights come on. Playing with the headlight switch made no change.
Any ideas on how to correct this problem ? |
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#12 |
Carpe manana
![]() ![]() Join Date: Dec 2010
Location: Eau Claire, WI
Posts: 12,395
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Re: Help with Instrument Panel
The OEM harness for a cluster without gauges differs from one with gauges for sure. I'd track down a good OEM 69-72 gauge harness by posting a WTB on the truck parts board and go with that. Good luck. Pete
__________________
1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547 1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308 ![]() |
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