Blue & Green Wire Out of Firewall block???? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

gangforward · 04-25-2005, 09:09 PM

Getting ready to install a new painless wiring kit, right now I'm tracking down all the current wires.

There are two wires coming out of the fuseblock? (square plastic thingy on drivers side of firewall). Neither of them are hooked up to anything in this truck - (67 C10 LB, 2WD, Auto)

One is green.
One is blue.

Any ideas what they are for?

Has an aftermarket guage pod for amp, water, oil, none of these guages work in the cluster. Blinkers do not work either. (dash is not A 67 - LATER auto choke dash, no tach :~(

TIA!

shifty · 04-25-2005, 09:12 PM

I'm 99% sure that Blue is for the oil pressure sensor (for dummy light). Green is for the temp sensor (for dummy light).

70c10swb · 04-25-2005, 09:16 PM

Quote:

Originally Posted by shifty

I'm 99% sure that Blue is for the oil pressure sensor (for dummy light). Green is for the temp sensor (for dummy light).

according to this you may be right

shifty · 04-25-2005, 09:19 PM

That's for the 6-cylinder

I don't know if it's diff't for the 327 V8 (I'm guessing the truck in his sig is the one he's asking for)

gangforward · 04-25-2005, 10:04 PM

Thanks for quick replies - yes it's the truck in my sig (now with 383 for power) Is there a way to apply current to the wire or something and see if the light in the guage panel comes on?

Truck is original with a V8. Never had a six in it. If it will help I can run out to the shop and take a quick pic.

TIA!

70c10swb · 04-25-2005, 10:07 PM

Quote:

Originally Posted by shifty

That's for the 6-cylinder

I don't know if it's diff't for the 327 V8 (I'm guessing the truck in his sig is the one he's asking for)

Opps i forgot to look

I just assumed he had th 6 for some reason

heres the diagram for the 8, same thing http://www.geocities.com/chevroletc1070/v8engcomp.html

gangforward · 04-25-2005, 10:10 PM

70c10swb,

Thanks! This diagram will help a lot!

04-25-2005, 09:09 PM	#1
gangforward Hootis is as Hootis does... Join Date: Nov 2002 Location: Southern Georgia Posts: 500	Blue & Green Wire Out of Firewall block???? Getting ready to install a new painless wiring kit, right now I'm tracking down all the current wires. There are two wires coming out of the fuseblock? (square plastic thingy on drivers side of firewall). Neither of them are hooked up to anything in this truck - (67 C10 LB, 2WD, Auto) One is green. One is blue. Any ideas what they are for? Has an aftermarket guage pod for amp, water, oil, none of these guages work in the cluster. Blinkers do not work either. (dash is not A 67 - LATER auto choke dash, no tach :~( TIA! __________________ 67 C10 LWB Fleet, 383, TH400, PS, 4BL-Holley, Headers & 3" Exhaust, 3" drop front, 4" rear springs, ECI shock relocate, Panhard Bar kit, wheels & tires 1995 Z28 Convertible - Borla, K&N, Lingenfelter Motor, C6 Wheels & Tires 1990 2500 4x4 Suburban 3" Catbac System, K&N, 2" Lift, Wheels, Tires

04-25-2005, 09:12 PM	#2
shifty Questionable Join Date: Mar 2005 Location: Atlanta Posts: 13,373	I'm 99% sure that Blue is for the oil pressure sensor (for dummy light). Green is for the temp sensor (for dummy light). __________________ If I've got anything up for grabs, it'll be here: 7-hole gauge cluster for a 67-72 p/u FREE (link) I can't check the forum daily. If I don't reply to you within 24 hours, drop me a PM! I'm (hopefully) still alive and will reply faster to a PM.

04-25-2005, 09:19 PM	#4
shifty Questionable Join Date: Mar 2005 Location: Atlanta Posts: 13,373	That's for the 6-cylinder I don't know if it's diff't for the 327 V8 (I'm guessing the truck in his sig is the one he's asking for) __________________ If I've got anything up for grabs, it'll be here: 7-hole gauge cluster for a 67-72 p/u FREE (link) I can't check the forum daily. If I don't reply to you within 24 hours, drop me a PM! I'm (hopefully) still alive and will reply faster to a PM.

04-25-2005, 10:04 PM	#5
gangforward Hootis is as Hootis does... Join Date: Nov 2002 Location: Southern Georgia Posts: 500	Thanks for quick replies - yes it's the truck in my sig (now with 383 for power) Is there a way to apply current to the wire or something and see if the light in the guage panel comes on? Truck is original with a V8. Never had a six in it. If it will help I can run out to the shop and take a quick pic. TIA! __________________ 67 C10 LWB Fleet, 383, TH400, PS, 4BL-Holley, Headers & 3" Exhaust, 3" drop front, 4" rear springs, ECI shock relocate, Panhard Bar kit, wheels & tires 1995 Z28 Convertible - Borla, K&N, Lingenfelter Motor, C6 Wheels & Tires 1990 2500 4x4 Suburban 3" Catbac System, K&N, 2" Lift, Wheels, Tires

04-25-2005, 10:10 PM	#7
gangforward Hootis is as Hootis does... Join Date: Nov 2002 Location: Southern Georgia Posts: 500	70c10swb, Thanks! This diagram will help a lot! __________________ 67 C10 LWB Fleet, 383, TH400, PS, 4BL-Holley, Headers & 3" Exhaust, 3" drop front, 4" rear springs, ECI shock relocate, Panhard Bar kit, wheels & tires 1995 Z28 Convertible - Borla, K&N, Lingenfelter Motor, C6 Wheels & Tires 1990 2500 4x4 Suburban 3" Catbac System, K&N, 2" Lift, Wheels, Tires



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