Electrical Connector when pulling cab - The 1947 - Present Chevrolet & GMC Truck Message Board Network

stllookn · 06-16-2004, 10:58 AM

Getting ready to pull cab and wondering about the big square wiring harness connectors on the firewall. It looks like the entire assembly comes out through cab before the harness connectors can be removed and pushed back into the engine compartment. Who has done this recently?

**CPNE** · 06-16-2004, 11:02 AM

There should be a 3/8 bolt holding the 2 engine harness leads to the fuse block on the engine suide of the firewall. loosen this bolt and the 2 harnesses should separate from the fuseblock. If it's been years since it's been removed it may pull hard.

In this manner the fuseblock can stay attached to cab and the 2 engine harnesses will remain with engine/front clip.

stllookn · 06-16-2004, 11:13 AM

Thanks...that seems pretty easy...I will check it out. I think it will be much easier to replace the cab supports when the cab is off the truck. It is a real pain working under there in tight quarters. I have another cab I can throw on too and that will be a much faster fix. Save the other cab for a winter project...LOL!

sneakysnake · 06-16-2004, 12:08 PM

Dont forget the taillights and ground straps

06-16-2004, 10:58 AM	#1
stllookn Saving 1 truck at a time! Join Date: Aug 2001 Location: Kent, WA Posts: 6,465	Electrical Connector when pulling cab Getting ready to pull cab and wondering about the big square wiring harness connectors on the firewall. It looks like the entire assembly comes out through cab before the harness connectors can be removed and pushed back into the engine compartment. Who has done this recently? __________________ '68 C20 Longhorn 50th Anniversary 400/TH400 '68 C20 Longhorn 50th Anniversary 468/TH400w/buckets '72 C20 Halfhorn (Longhorn w/o cab and front clip) '69 Flxible Cruiser (look up ugly in the dictionary)

06-16-2004, 11:02 AM	#2
CPNE Resident Curmudgeon Join Date: Dec 1999 Location: NH Posts: 6,664	There should be a 3/8 bolt holding the 2 engine harness leads to the fuse block on the engine suide of the firewall. loosen this bolt and the 2 harnesses should separate from the fuseblock. If it's been years since it's been removed it may pull hard. In this manner the fuseblock can stay attached to cab and the 2 engine harnesses will remain with engine/front clip. __________________ Currently on or near the homestead: 67 Chevy SWB 2WD stepside 350/3 on tree (Pat's) 67 GMC SWB 2WD Fleet 402/auto (Brian's under construction) 67 Chevy 3/4 ton 2WD 402/auto (Business Hauler) 67 Chevy 1 ton dually 2WD 396/4 speed (Former business hauler, Needs TLC) 68 Chevy 1/2 ton Suburban 2WD 250 six/3 on tree (Brian's Needs TLC) 70 Chevy 3/4 ton 4WD 350/4 speed (Pat's - Disguised as a 68 GMC) 71 Chevy SWB stepside (Crushed by tree - parts donor) 72 Chevy 3/4 ton 4WD (Parts donor) 72 Chevy 3/4 ton 4WD Suburban (Parts Donor) 72 GMC 3/4 ton 4WD 292 six/4 speed (Mine - Disguised as a 67 GMC) 81 GMC 4WD Dually Dump Body 350/4 speed (Business Hauler) 82 Camaro Z/28 355/Super T-10 (Pat's toy) 93 Caprice 9C1 (Brian's Cop Car) 02 Toyota Camry (Reliable but a souless steel and plastic hulk) 2011 2SS RS Camaro M6 Factory Hurst Shifter Maybe I need to sell some of this crap Yet another Bozo with a sawz-all

06-16-2004, 11:13 AM	#3
stllookn Saving 1 truck at a time! Join Date: Aug 2001 Location: Kent, WA Posts: 6,465	Thanks...that seems pretty easy...I will check it out. I think it will be much easier to replace the cab supports when the cab is off the truck. It is a real pain working under there in tight quarters. I have another cab I can throw on too and that will be a much faster fix. Save the other cab for a winter project...LOL! __________________ '68 C20 Longhorn 50th Anniversary 400/TH400 '68 C20 Longhorn 50th Anniversary 468/TH400w/buckets '72 C20 Halfhorn (Longhorn w/o cab and front clip) '69 Flxible Cruiser (look up ugly in the dictionary)

06-16-2004, 12:08 PM	#4
sneakysnake It's a catastrophic success. Join Date: Jan 2003 Location: Oklahoma Posts: 2,077	Dont forget the taillights and ground straps



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