I seem to lack basic understanding of unplugging a plug - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**dmjlambert** · 05-21-2016, 12:24 PM

Hi
I am trying to troubleshoot wiring to the brake lights. I have this connector above the gas pedal on the firewall that goes to engine compartment and from there goes to the rear of the truck. It looks like a plastic connector going into a rubber cup. I can't figure out how to unplug it. Should this be as simple as pulling the plug? I can't get it to unplug. I would like to unplug it so I can isolate the cab/dash wiring from the wiring that goes from the engine compartment to the back of the truck.

1969 Chevrolet CST/10 Pickup

Thanks
David

_Ogre · 05-21-2016, 03:33 PM

looks like someone jammed a square plug into a round hole
wiggle it and unplug it, probably have to use the force on it

**Wrenchbender Ret** · 05-21-2016, 05:13 PM

Yes. It should just pull out. There are no tangs or clips like these later models have. It probably has some corrosion in it. That is likely where your problem is.

**dmjlambert** · 05-21-2016, 06:47 PM

Thank you very much. I wanted to reduce the likelihood of breaking something, so I thought I would ask before getting more aggressive. I will wiggle it a little and pull on it until I work it out of the socket.

71swb4x4 · 05-21-2016, 06:50 PM

You can pull the rubber plug through the firewall so you can hold both sides at once.

**dmjlambert** · 05-21-2016, 06:53 PM

I will have to give that a try if I have enough slack in the wires. Does it push from the engine compartment into the cab?

vidman · 05-21-2016, 08:14 PM

push from inside cab to engine compartment..They can be a tight fit

Andy4639 · 05-21-2016, 09:16 PM

Take a test light and stick in each wire in the connector and see if it has voltage on the wires when you press the brakes. That will tell you if it's passing through it are not.
You want have to unplug anything either.

**dmjlambert** · 05-22-2016, 12:20 AM

Thanks, I will give that a try.

05-21-2016, 12:24 PM	#1
dmjlambert Senior Member Join Date: Apr 2016 Location: Cypress, TX Posts: 3,561	I seem to lack basic understanding of unplugging a plug Hi I am trying to troubleshoot wiring to the brake lights. I have this connector above the gas pedal on the firewall that goes to engine compartment and from there goes to the rear of the truck. It looks like a plastic connector going into a rubber cup. I can't figure out how to unplug it. Should this be as simple as pulling the plug? I can't get it to unplug. I would like to unplug it so I can isolate the cab/dash wiring from the wiring that goes from the engine compartment to the back of the truck. 1969 Chevrolet CST/10 Pickup Thanks David Attached Images

05-21-2016, 03:33 PM	#2
_Ogre Registered User Join Date: Jan 2012 Location: Motown Posts: 7,662	Re: I seem to lack basic understanding of unplugging a plug looks like someone jammed a square plug into a round hole wiggle it and unplug it, probably have to use the force on it __________________ cool, an ogre smiley Ogre's 58 Truk build how to put your truck year and build thread into your signature shop air compressor timer

05-21-2016, 05:13 PM	#3
Wrenchbender Ret Registered User Join Date: Oct 2005 Location: Overland Park, Ks. Posts: 5,190	Re: I seem to lack basic understanding of unplugging a plug Yes. It should just pull out. There are no tangs or clips like these later models have. It probably has some corrosion in it. That is likely where your problem is.

05-21-2016, 06:47 PM	#4
dmjlambert Senior Member Join Date: Apr 2016 Location: Cypress, TX Posts: 3,561	Re: I seem to lack basic understanding of unplugging a plug Thank you very much. I wanted to reduce the likelihood of breaking something, so I thought I would ask before getting more aggressive. I will wiggle it a little and pull on it until I work it out of the socket.

05-21-2016, 06:50 PM	#5
71swb4x4 Senior Member Join Date: Nov 2003 Location: Brookings, SD Posts: 10,497	Re: I seem to lack basic understanding of unplugging a plug You can pull the rubber plug through the firewall so you can hold both sides at once. __________________ Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs.

05-21-2016, 06:53 PM	#6
dmjlambert Senior Member Join Date: Apr 2016 Location: Cypress, TX Posts: 3,561	Re: I seem to lack basic understanding of unplugging a plug I will have to give that a try if I have enough slack in the wires. Does it push from the engine compartment into the cab?

05-21-2016, 08:14 PM	#7
vidman Registered User Join Date: Jun 2012 Location: Fitchburg,Mass Posts: 737	Re: I seem to lack basic understanding of unplugging a plug push from inside cab to engine compartment..They can be a tight fit __________________ 62 Willys 4wd Pickup : 72 C-10 swb 504 stroker 09 Taco 3" lift 33" tires: 90 K-5 blazer (plow truck): RIP Ross Little brother

05-21-2016, 09:16 PM	#8
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,936	Re: I seem to lack basic understanding of unplugging a plug Take a test light and stick in each wire in the connector and see if it has voltage on the wires when you press the brakes. That will tell you if it's passing through it are not. You want have to unplug anything either. __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.

05-22-2016, 12:20 AM	#9
dmjlambert Senior Member Join Date: Apr 2016 Location: Cypress, TX Posts: 3,561	Re: I seem to lack basic understanding of unplugging a plug Thanks, I will give that a try.



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