Lets play, Name that plug! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

longnlow72 · 12-31-2005, 08:52 PM

Today, I was looking at wiring on the firewall. Seeing what goes to what and what I could eliminate. I found a plug on the passenger side that didn't connect to anything(pic #1). Coming from the plug there was 3 wires, blue, green, and brown with a white tracer. The green wire was cut shortly after the plug and went to nothing. I then traced the blue and brown wires back to see where they went and they went in the hole with the arrow pointing at it(pic #2). In the same loom as the blue and brown wires there was one red wire and one black wire. They both were cut on the same end as the plug and went into the firewall in the same spot as the others. The red wire went to a key-on power soure on the fuse block. The black wire, along with the blue and brown went to a relay mounted above and to the right of the fuse block(pic #3). Any ideas of what these wires are for? Thanks

-Ben

68 short step · 12-31-2005, 09:02 PM

blower motor something

**john** · 12-31-2005, 09:16 PM

Trucks with TCS had a solenoid on pass side of intake manifold by carb. They were controlled with a relay,but Im not sure of the location on the trucks. I think they had a connector similar to yours. John

68cajun · 12-31-2005, 09:28 PM

Looks like an A/C clutch plug to me

longnlow72 · 12-31-2005, 09:38 PM

Quote:

Originally Posted by 68cajun

Looks like an A/C clutch plug to me

would that be on a non-ac truck?

**truckdude239** · 12-31-2005, 09:42 PM

not unless the truck had ac at one point in time

longnlow72 · 12-31-2005, 09:43 PM

hmmm....Any other ideas

matthufham · 12-31-2005, 10:56 PM

i asked about this not even a month ago, turns out it's an emissions thing. one or 2 go to the carb, 1 to the trans to mess with idle or something.. mine were cut, they're gonna stay cut.

matthufham · 12-31-2005, 11:02 PM

http://67-72chevytrucks.com/vboard/s...d.php?t=182844
found it

12-31-2005, 09:28 PM	#4
68cajun 68 C/10 Join Date: Oct 2003 Location: Houma Louisiana Posts: 367	Re: Lets play, Name that plug! Looks like an A/C clutch plug to me __________________ (2009) GMC Sierra Denali 6.2 AWD (67 C/10 fleetside SWB) (2018GMC Yukon Denali) Wifes Car

12-31-2005, 09:42 PM	#6
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,237	Re: Lets play, Name that plug! not unless the truck had ac at one point in time __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

12-31-2005, 09:43 PM	#7
longnlow72 Registered User Join Date: Aug 2004 Location: SW Washington Posts: 947	Re: Lets play, Name that plug! hmmm....Any other ideas __________________ 72 Chevy lwb, cowl hood, shaved antenna, shaved bedrails, blazer tank, sidemarker fill, 1pc windows, flowmaster 40's, alpine deck, infinity 6x9's, infinity 4"ers, 2 jl audio 10w0's, grant wheel, keyless entry and alarm, more waiting to be done...

12-31-2005, 10:56 PM	#8
matthufham Registered User Join Date: Feb 2005 Location: Carl Junction, Missouri Posts: 2,061	Re: Lets play, Name that plug! i asked about this not even a month ago, turns out it's an emissions thing. one or 2 go to the carb, 1 to the trans to mess with idle or something.. mine were cut, they're gonna stay cut. Attached Images Last edited by matthufham; 12-31-2005 at 10:59 PM.

12-31-2005, 11:02 PM	#9
matthufham Registered User Join Date: Feb 2005 Location: Carl Junction, Missouri Posts: 2,061	Re: Lets play, Name that plug! http://67-72chevytrucks.com/vboard/s...d.php?t=182844 found it

12-31-2005, 08:52 PM	#1
longnlow72 Registered User Join Date: Aug 2004 Location: SW Washington Posts: 947	Lets play, Name that plug! Today, I was looking at wiring on the firewall. Seeing what goes to what and what I could eliminate. I found a plug on the passenger side that didn't connect to anything(pic #1). Coming from the plug there was 3 wires, blue, green, and brown with a white tracer. The green wire was cut shortly after the plug and went to nothing. I then traced the blue and brown wires back to see where they went and they went in the hole with the arrow pointing at it(pic #2). In the same loom as the blue and brown wires there was one red wire and one black wire. They both were cut on the same end as the plug and went into the firewall in the same spot as the others. The red wire went to a key-on power soure on the fuse block. The black wire, along with the blue and brown went to a relay mounted above and to the right of the fuse block(pic #3). Any ideas of what these wires are for? Thanks -Ben Attached Images __________________ 72 Chevy lwb, cowl hood, shaved antenna, shaved bedrails, blazer tank, sidemarker fill, 1pc windows, flowmaster 40's, alpine deck, infinity 6x9's, infinity 4"ers, 2 jl audio 10w0's, grant wheel, keyless entry and alarm, more waiting to be done...

12-31-2005, 09:02 PM	#2
68 short step Senior Member Join Date: Aug 2005 Location: tulsa OK Posts: 3,070	Re: Lets play, Name that plug! blower motor something

12-31-2005, 09:16 PM	#3
john member #16 Join Date: Dec 1999 Location: Yuba City Ca. Posts: 3,618	Re: Lets play, Name that plug! Trucks with TCS had a solenoid on pass side of intake manifold by carb. They were controlled with a relay,but Im not sure of the location on the trucks. I think they had a connector similar to yours. John __________________ john http://67-72chevytrucks.com/vboard/showgroups.php board vendors http://www.flickr.com/photos/1745471...7602865984234/

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