1986 GMC Sierra 1500 SWB wiring - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dreverlast · 12-31-2010, 10:53 PM

Hi, am new to the board and would like some help please. I have an 1986 GMC Sierra Classic 1500 short bed with 305 v8. What I am looking for is where some of the wiring goes in the engine bay. The truck I bought had a race motor in it from what I'm told and when they put the 305 back in it, they left ALOT of stuff just hanging or cut. Air conditioning was also removed with all the plumbing too so any help here would be awesome too. I need to put a horn back in it as that is gone along with the wiring. There is a wire hanging from the drivers side headlight (appears to be a spade terminal) that I dont know where it goes. Truck runs good although I see 2 spots on the Edelbrock carb that are capped off and there is a small zip tie on the passenger side of the carb for some reason??? Some stock engine bay shots (especially wiring) would be great!!! Thank you all for your help!

dreverlast · 12-31-2010, 10:56 PM

I will untarp it and shoot some engine bay pics when we get a break in the weather. Thanks again all!

HOGDADDY · 01-03-2011, 11:47 PM

I think that spade terminal goes to the brake proportioning valve down there.

Here is a few pics might help I dunno.

HOGDADDY · 01-03-2011, 11:50 PM

Here few more.

Good luck.

I may be able take some specific ones of my truck these are just some pics I had on computer.

turbo_lover · 06-26-2011, 01:34 PM

Hi guys i'm new here and all though this thread seems a lil dated I was wondering if anyone has pics of connection points for transmission sensors and tie in point to harness? Any help would be greatly appreciated.

Hoods69BadBowTie · 06-26-2011, 01:45 PM

More info is needed for you! What truck and year is it?
Posted via Mobile Device

turbo_lover · 06-28-2011, 11:11 PM

Sorry its a 1986 gmc k-1500 sierra 4x4 pick up

12-31-2010, 10:53 PM	#1
dreverlast Registered User Join Date: Dec 2010 Location: Newark, Ohio Posts: 27	1986 GMC Sierra 1500 SWB wiring Hi, am new to the board and would like some help please. I have an 1986 GMC Sierra Classic 1500 short bed with 305 v8. What I am looking for is where some of the wiring goes in the engine bay. The truck I bought had a race motor in it from what I'm told and when they put the 305 back in it, they left ALOT of stuff just hanging or cut. Air conditioning was also removed with all the plumbing too so any help here would be awesome too. I need to put a horn back in it as that is gone along with the wiring. There is a wire hanging from the drivers side headlight (appears to be a spade terminal) that I dont know where it goes. Truck runs good although I see 2 spots on the Edelbrock carb that are capped off and there is a small zip tie on the passenger side of the carb for some reason??? Some stock engine bay shots (especially wiring) would be great!!! Thank you all for your help! Attached Images Last edited by dreverlast; 01-01-2011 at 07:58 PM.

12-31-2010, 10:56 PM	#2
dreverlast Registered User Join Date: Dec 2010 Location: Newark, Ohio Posts: 27	Re: 1986 GMC Sierra 1500 SWB wiring I will untarp it and shoot some engine bay pics when we get a break in the weather. Thanks again all!

01-03-2011, 11:47 PM	#3
HOGDADDY Registered User Join Date: Jul 2006 Location: Alabama Posts: 661	Re: 1986 GMC Sierra 1500 SWB wiring I think that spade terminal goes to the brake proportioning valve down there. Here is a few pics might help I dunno. Attached Images

01-03-2011, 11:50 PM	#4
HOGDADDY Registered User Join Date: Jul 2006 Location: Alabama Posts: 661	Re: 1986 GMC Sierra 1500 SWB wiring Here few more. Good luck. I may be able take some specific ones of my truck these are just some pics I had on computer. Attached Images

06-26-2011, 01:34 PM	#5
turbo_lover Registered User Join Date: Jun 2011 Location: phoenix, az Posts: 2	Re: 1986 GMC Sierra 1500 SWB wiring Hi guys i'm new here and all though this thread seems a lil dated I was wondering if anyone has pics of connection points for transmission sensors and tie in point to harness? Any help would be greatly appreciated.

06-26-2011, 01:45 PM	#6
Hoods69BadBowTie Chevys Kick A$$ Join Date: Jan 2005 Location: Zootown, MT Posts: 12,699	Re: 1986 GMC Sierra 1500 SWB wiring More info is needed for you! What truck and year is it? Posted via Mobile Device __________________ HOODS is what I answer too -'79, '77, '88 Pickup Sold, '85 Camaro, '83 T/A, '81,'83,'90 K5 Blazer All Sold -'79 3/4 ton "Big Yellow Bananna" Lifted 4spd. 39.5 TSL Swampers, The money Pit -'86 K5 Blazer Silverado 6.2 4" lift 35"s -'95 Ext. Cab Shorty 4" Tuff Country rolling 35" M/T's -'83 Monte Carlo T-Tops. 126,500 Original Miles -LATER I would rather push a Chevy then drive a ford!!

06-28-2011, 11:11 PM	#7
turbo_lover Registered User Join Date: Jun 2011 Location: phoenix, az Posts: 2	Re: 1986 GMC Sierra 1500 SWB wiring Sorry its a 1986 gmc k-1500 sierra 4x4 pick up



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