Need ehlp - ID this plug - The 1947 - Present Chevrolet & GMC Truck Message Board Network

DieselSJ · 08-22-2019, 11:13 AM

Had my steering column out and when I put it all back together I cannot remember where this plug goes. I cannot find that color combination on my wiring diagram.

Any ideas?

**Palf70Step** · 08-22-2019, 08:45 PM

I cannot see it clearly, but it looks like the brake pedal switch. plug

DieselSJ · 08-26-2019, 05:07 PM

Quote:

Originally Posted by Palf70Step

I cannot see it clearly, but it looks like the brake pedal switch. plug

Thanks but nope - I have that one already. Wires are pink with black trace and purple on this one.

sweetk30 · 08-26-2019, 05:43 PM

did you use to have cruise control ? some early units had a vac cut out switch to dump the diaphragm and also a switch on it .

**Palf70Step** · 08-26-2019, 07:53 PM

I know pink w/black is a switched 12V lead, but like you I don't see that color combo used in my electrics diagrams either.

Only thing rining in my mind now might be for safety belts connection. What year is the truck and is it 2wd/4wd?

DieselSJ · 08-27-2019, 12:35 PM

Quote:

Originally Posted by sweetk30

did you use to have cruise control ? some early units had a vac cut out switch to dump the diaphragm and also a switch on it .

That might be it...didn't think about the old vac switch also having electrical connector. I did tear out all of the factory cruise wiring when I had the column out. Thank you!!

sweetk30 · 08-27-2019, 02:35 PM

if you did this also make sure to plug the hose off . i chased down a vac leak sound under the dash of my first truck and forgot this and replaced a brake booster for nothing . . . . it was the dam hose sucking air when i hit the brakes .

DieselSJ · 08-27-2019, 04:44 PM

Quote:

Originally Posted by sweetk30

if you did this also make sure to plug the hose off . i chased down a vac leak sound under the dash of my first truck and forgot this and replaced a brake booster for nothing . . . . it was the dam hose sucking air when i hit the brakes .

Oh yeah. All of the underhood stuff has been gone for a while and the vac hose disconnected.

On a side note, if anyone needs a complete factory CC setup (minus the lever on the column) send me a PM.

08-22-2019, 11:13 AM	#1
DieselSJ Registered User Join Date: Jun 2016 Location: Phoenix, AZ Posts: 574	Need ehlp - ID this plug Had my steering column out and when I put it all back together I cannot remember where this plug goes. I cannot find that color combination on my wiring diagram. Any ideas? __________________ 87 R30 CC Dually, TBI 454, NV4500, zero rust barn find 87 Jeep Grand Wagoneer, 6.5 turbodiesel, 700R4

08-22-2019, 08:45 PM	#2
Palf70Step State of Confusion! Join Date: Jul 2002 Location: Gulfport, MS USA Posts: 47,228	Re: Need ehlp - ID this plug I cannot see it clearly, but it looks like the brake pedal switch. plug __________________ Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God!

08-26-2019, 05:43 PM	#4
sweetk30 Registered User Join Date: May 2012 Location: horseheads,ny rust belt Posts: 2,794	Re: Need ehlp - ID this plug did you use to have cruise control ? some early units had a vac cut out switch to dump the diaphragm and also a switch on it . __________________ 77-k30lb BIG truck build . 87-k30lb budget beater build . 85-k30lb the plow machine build . 85-c10sb summer fun toy . ----------------------------- HOLLEY SNIPER efi = worst case of p.i.t.a i ever had . EDELBROCK pro flo 4 = best deal going so far . love my setup works great.

08-26-2019, 07:53 PM	#5
Palf70Step State of Confusion! Join Date: Jul 2002 Location: Gulfport, MS USA Posts: 47,228	Re: Need ehlp - ID this plug I know pink w/black is a switched 12V lead, but like you I don't see that color combo used in my electrics diagrams either. Only thing rining in my mind now might be for safety belts connection. What year is the truck and is it 2wd/4wd? __________________ Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God!

08-27-2019, 02:35 PM	#7
sweetk30 Registered User Join Date: May 2012 Location: horseheads,ny rust belt Posts: 2,794	Re: Need ehlp - ID this plug if you did this also make sure to plug the hose off . i chased down a vac leak sound under the dash of my first truck and forgot this and replaced a brake booster for nothing . . . . it was the dam hose sucking air when i hit the brakes . __________________ 77-k30lb BIG truck build . 87-k30lb budget beater build . 85-k30lb the plow machine build . 85-c10sb summer fun toy . ----------------------------- HOLLEY SNIPER efi = worst case of p.i.t.a i ever had . EDELBROCK pro flo 4 = best deal going so far . love my setup works great.



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