Under dash wiring harness - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Undone · 07-17-2016, 06:55 PM

Anyone know if this is the same for a C-10, say its for a C-40.

C40 NOS UNDER DASH WIRING HARNESS with FUSE BLOCK 3945804

snipescastle2 · 07-17-2016, 09:00 PM

I believe the wiring harnesses were the same for all the different truck sizes, as they all used the same cabs. the engine/light harnesses were specific to the engine/trans combination. but, if they came with or without air changes everything. I'm sure someone will correct me if I"m wrong, but looking at my assembly manual, they all used the same cab, only different chassis and front sheet metal, engine/drive trains.
the larger trucks may have come with an air gauge (for air brakes) or a vacuum gauge but all used the same major cab parts.
Ben

Gromit · 07-17-2016, 09:42 PM

Another way to check might be to look on americanautowire.com and look for the "Factory Fit" product line (not Classic Update) for the vehicle you have in mind. If you look at their product / price list on pdf for that Factory Fit line you can see all the different options and harnesses for various vehicles. I have found them to be accurate for what I've used from them - and when I have asked questions their staff seems competent. My 1970 A/C truck (C10) had a separate A/C harness. The heater blower is still on the dash harness.

07-17-2016, 06:55 PM	#1
Undone Registered User Join Date: Aug 2010 Location: commerce ga Posts: 896	Under dash wiring harness Anyone know if this is the same for a C-10, say its for a C-40. C40 NOS UNDER DASH WIRING HARNESS with FUSE BLOCK 3945804

07-17-2016, 09:00 PM	#2
snipescastle2 Registered User Join Date: Mar 2009 Location: WARRENSBURG,MISSOURI,64093 Posts: 1,518	Re: Under dash wiring harness I believe the wiring harnesses were the same for all the different truck sizes, as they all used the same cabs. the engine/light harnesses were specific to the engine/trans combination. but, if they came with or without air changes everything. I'm sure someone will correct me if I"m wrong, but looking at my assembly manual, they all used the same cab, only different chassis and front sheet metal, engine/drive trains. the larger trucks may have come with an air gauge (for air brakes) or a vacuum gauge but all used the same major cab parts. Ben __________________ "Persistence is the twin sister of Excellence.one is a matter of quality,the other, a matter of time" “Serious Black” my 1971 Short Bed Fleetside Sold to an outstanding man in Lees Summit,Mo. “Gone, but by no means,Forgotten”

07-17-2016, 09:42 PM	#3
Gromit Registered User Join Date: Jul 2015 Location: Central Coast, CA Posts: 501	Re: Under dash wiring harness Another way to check might be to look on americanautowire.com and look for the "Factory Fit" product line (not Classic Update) for the vehicle you have in mind. If you look at their product / price list on pdf for that Factory Fit line you can see all the different options and harnesses for various vehicles. I have found them to be accurate for what I've used from them - and when I have asked questions their staff seems competent. My 1970 A/C truck (C10) had a separate A/C harness. The heater blower is still on the dash harness.



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