Guage wiring--Again - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Palf70Step** · 11-30-2002, 09:51 PM

I know this has been killed alot around here but I have a confusion question. Picked up a factory guage /bezel panel to use in my truck to replace the idiot lite one. Been reviewing what's needed.

1. need to rewire the connector for the changes
2. need a different temp sender

Things I didn't find and are not sure of

1. is the oil pressure sensor the same for both idiot light & gauge or do I need to swap it out also.

2. My truck is a 70 and the guage panel came out of a 68. I noticed that if you went to buy a new dash harness they list the 67-68 as one item and the 69-72 as another item. What, if anything, is the difference and is this going to cause a problem.

My engine is the 250 I6 if that makes any difference

Thanks

red71cheyenne · 11-30-2002, 11:15 PM

The oil pressure goes to the oil guage thru a small diameter oil line. No sensor involved. You have to install a small fitting back by the distributor. I'm not sure on the differences between the years, but I swapped a buddies idiot light dash for a guage one, and all that I had to do was relocate the ground in the harness and one turn signal wire. Dark blue I think. Hope that helps, Jeff.

70c10 · 12-01-2002, 12:43 AM

Palf70step,
Go to GMCPauls site. He has a tech page and lists the procedure step by step with a schematic.

Longhorn Man · 12-01-2002, 01:19 AM

red71cheyenne, you only had to move 2 wires!? When i slapped a guage panel into a light panel (not knowing the harnesses were differant) i had a whole bunch of lights not work properly, and my fuel guage fried after spinning around like on a cartoon or something. Did EVERYTHING work after just 2 wires being moved?

red71cheyenne · 12-01-2002, 01:29 AM

Those are the only two I remember. It might have been more, but those are the only two I remember. I just went off the schematic in my haynes manual. It didn't take very long, I remember that. Jeff.

Sammy · 12-04-2002, 12:03 AM

Just wanted to try to speculate an answer of your question in reference to the differances in the older dash panel's. I believe the older ones had provisions for manual chokes and the 69 and newer had automatic chokes which counts for an additional hole in the panel. Is this correct??

70c10 · 12-04-2002, 08:55 AM

69 and newer do NOT have the choke hole. You are correct!

**Palf70Step** · 12-04-2002, 06:42 PM

I knew about the choke hole but I was wondering why the wiring harnesses were listed as different numbers. I was curious if there was something different in the actual wiring between a guage dasy for 67-68 and one for 69-72?

**john** · 12-04-2002, 08:22 PM

Is the wiper switch on the opposite side of the cluster?

11-30-2002, 09:51 PM	#1
Palf70Step State of Confusion! Join Date: Jul 2002 Location: Gulfport, MS USA Posts: 47,216	Guage wiring--Again I know this has been killed alot around here but I have a confusion question. Picked up a factory guage /bezel panel to use in my truck to replace the idiot lite one. Been reviewing what's needed. 1. need to rewire the connector for the changes 2. need a different temp sender Things I didn't find and are not sure of 1. is the oil pressure sensor the same for both idiot light & gauge or do I need to swap it out also. 2. My truck is a 70 and the guage panel came out of a 68. I noticed that if you went to buy a new dash harness they list the 67-68 as one item and the 69-72 as another item. What, if anything, is the difference and is this going to cause a problem. My engine is the 250 I6 if that makes any difference Thanks __________________ Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God!

11-30-2002, 11:15 PM	#2
red71cheyenne Back in the sticks Join Date: Jan 2001 Location: Fordland, MO Posts: 3,188	The oil pressure goes to the oil guage thru a small diameter oil line. No sensor involved. You have to install a small fitting back by the distributor. I'm not sure on the differences between the years, but I swapped a buddies idiot light dash for a guage one, and all that I had to do was relocate the ground in the harness and one turn signal wire. Dark blue I think. Hope that helps, Jeff. __________________ 1971 Cheyenne C-10 w/700R4 and Tuned Port Injection 1969 K5 Blazer w/Tuned Port 2010 2SS/RS Flaming Orange Camaro 2011 K1500 Suburban 2014 K1500 Pickup 2008 Nissan Altima? The wifes' hoopty

12-01-2002, 12:43 AM	#3
70c10 67-72 Addict! Join Date: Feb 2002 Location: The TAX State! Posts: 7,856	Palf70step, Go to GMCPauls site. He has a tech page and lists the procedure step by step with a schematic. __________________ Jim 1970 C/10 Fleetside w/Ghost Flames Lowered 4.5" front and 4" rear (Raked) 355/350 Turbo w/shift kit 10" Redneck Performance Verter w/2500 stall Hooker Super Comps part#2808-1 Performer RPM Air-Gap 12 Bolt w/3:73 gears- Eaton Posi Comp Cams XE262 with 1.6 Crane Energizers, Road Demon 625 and Brodix IK 180 heads

12-01-2002, 01:29 AM	#5
red71cheyenne Back in the sticks Join Date: Jan 2001 Location: Fordland, MO Posts: 3,188	Those are the only two I remember. It might have been more, but those are the only two I remember. I just went off the schematic in my haynes manual. It didn't take very long, I remember that. Jeff. __________________ 1971 Cheyenne C-10 w/700R4 and Tuned Port Injection 1969 K5 Blazer w/Tuned Port 2010 2SS/RS Flaming Orange Camaro 2011 K1500 Suburban 2014 K1500 Pickup 2008 Nissan Altima? The wifes' hoopty

12-04-2002, 12:03 AM	#6
Sammy Registered User Join Date: Apr 2000 Location: Bonne Terre, Mo Posts: 3,005	Just wanted to try to speculate an answer of your question in reference to the differances in the older dash panel's. I believe the older ones had provisions for manual chokes and the 69 and newer had automatic chokes which counts for an additional hole in the panel. Is this correct?? __________________ '69 Chevy Long Fleet & '71 GMC Short Step & Project "ODD BALL" "You can wash a pig, soak it in most expensive perfume. In the end it is still just a pig." ODD BALL build thread http://67-72chevytrucks.com/vboard/s...d.php?t=478629"

12-01-2002, 01:19 AM	#4
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	red71cheyenne, you only had to move 2 wires!? When i slapped a guage panel into a light panel (not knowing the harnesses were differant) i had a whole bunch of lights not work properly, and my fuel guage fried after spinning around like on a cartoon or something. Did EVERYTHING work after just 2 wires being moved?

12-04-2002, 08:55 AM	#7
70c10 67-72 Addict! Join Date: Feb 2002 Location: The TAX State! Posts: 7,856	69 and newer do NOT have the choke hole. You are correct! __________________ Jim 1970 C/10 Fleetside w/Ghost Flames Lowered 4.5" front and 4" rear (Raked) 355/350 Turbo w/shift kit 10" Redneck Performance Verter w/2500 stall Hooker Super Comps part#2808-1 Performer RPM Air-Gap 12 Bolt w/3:73 gears- Eaton Posi Comp Cams XE262 with 1.6 Crane Energizers, Road Demon 625 and Brodix IK 180 heads

12-04-2002, 06:42 PM	#8
Palf70Step State of Confusion! Join Date: Jul 2002 Location: Gulfport, MS USA Posts: 47,216	I knew about the choke hole but I was wondering why the wiring harnesses were listed as different numbers. I was curious if there was something different in the actual wiring between a guage dasy for 67-68 and one for 69-72? __________________ Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God!

12-04-2002, 08:22 PM	#9
john member #16 Join Date: Dec 1999 Location: Yuba City Ca. Posts: 3,618	Is the wiper switch on the opposite side of the cluster? __________________ john http://67-72chevytrucks.com/vboard/showgroups.php board vendors http://www.flickr.com/photos/1745471...7602865984234/

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