Firewall junction diagram - The 1947 - Present Chevrolet & GMC Truck Message Board Network

w00dst0ck · 01-14-2015, 01:54 PM

Does anyone have a diagram showing where the wires coming out of the firewall junction block go? The colored ones I've found don't really help, as most of my wires are different colors it seems.

Specifically looking for info on a dark/light green combo coming out of the passenger side block, a 12-14 gauge constant pink that comes out of the same block tied into another (I know one goes to the fusibile link on the passenger side fender).

Long story short I'm trying to fix a harness someone butchered, and also trace a short.

Headlights will be able to come on without the key in, then once the wiring gets moved a little the circuit will change to switched power.

**72peace** · 01-16-2015, 04:14 PM

maybe these will help:

**FirstOwner69** · 01-16-2015, 05:22 PM

Here are links to the diagrams that'll allow you to actually read them.

http://67-72chevytrucks.com/gallery/...hp?photo=24881

http://67-72chevytrucks.com/gallery/...hp?photo=24880

**72peace** · 01-16-2015, 11:53 PM

Sorry, thought I was attaching a PDF, came out as a picture. Thanks for posting the link.

Cheers,

**FirstOwner69** · 01-17-2015, 12:29 AM

Quote:

Originally Posted by 72peace

Sorry, thought I was attaching a PDF, came out as a picture. Thanks for posting the link.

Cheers,

Damn computers!

01-14-2015, 01:54 PM	#1
w00dst0ck Registered User Join Date: Jul 2013 Location: Austin, Texas Posts: 349	Firewall junction diagram Does anyone have a diagram showing where the wires coming out of the firewall junction block go? The colored ones I've found don't really help, as most of my wires are different colors it seems. Specifically looking for info on a dark/light green combo coming out of the passenger side block, a 12-14 gauge constant pink that comes out of the same block tied into another (I know one goes to the fusibile link on the passenger side fender). Long story short I'm trying to fix a harness someone butchered, and also trace a short. Headlights will be able to come on without the key in, then once the wiring gets moved a little the circuit will change to switched power.

01-16-2015, 04:14 PM	#2
72peace Senior Member Join Date: Jan 2011 Location: Bellevue, NE Posts: 712	Re: Firewall junction diagram maybe these will help: Attached Images

01-16-2015, 05:22 PM	#3
FirstOwner69 Senior Member Join Date: May 2010 Location: Wisconsin & Arizona Posts: 4,853	Re: Firewall junction diagram Here are links to the diagrams that'll allow you to actually read them. http://67-72chevytrucks.com/gallery/...hp?photo=24881 http://67-72chevytrucks.com/gallery/...hp?photo=24880

01-16-2015, 11:53 PM	#4
72peace Senior Member Join Date: Jan 2011 Location: Bellevue, NE Posts: 712	Re: Firewall junction diagram Sorry, thought I was attaching a PDF, came out as a picture. Thanks for posting the link. Cheers,



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