3rd brake light - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Larry64 · 10-09-2015, 07:20 PM

Putting in a Suburban 3rd brake light. Have the light grounded. Where do you attach the wire to activate the light when braking?
Thanks

**PGSigns** · 10-09-2015, 08:02 PM

I would pick it up off the brake light switch.
Jimmy

Larry64 · 10-09-2015, 08:06 PM

Jimmy the brown, green or yellow wire.
Thanks

**joedoh** · 10-09-2015, 08:09 PM

white at the switch. dont use the brown, its parking lights, dont use the yellow or green those are turn/brake, your third brake light will flash with whichever turn signal wire you use.

as jimmy said, get it at the switch, it is the white.

Larry64 · 10-09-2015, 08:11 PM

Thanks

**PGSigns** · 10-09-2015, 08:10 PM

With a test light one side is hot all the time and the other side the switch will only be hot when the pedal is pushed. That is the side you need.
Jimmy

10-09-2015, 07:20 PM	#1
Larry64 Registered User Join Date: Sep 2011 Location: Lewisburg, TN Posts: 315	3rd brake light Putting in a Suburban 3rd brake light. Have the light grounded. Where do you attach the wire to activate the light when braking? Thanks __________________ Never drive faster than your Guardian Angel can fly Larry

10-09-2015, 08:02 PM	#2
PGSigns Senior Member Join Date: Jan 2011 Location: Hayes Va Posts: 4,569	Re: 3rd brake light I would pick it up off the brake light switch. Jimmy __________________ 60 to 66 Chevy and GMC window decals http://67-72chevytrucks.com/vboard/s...d.php?t=661131 Good friends, good food and a hotrod what else do you need? 1966 BBW long fleet Daily driver 1965 BBW short fleet Sold and going to a good home 1965 Suburban 2003 3500 Duramax 2005 Ultra Classic

10-09-2015, 08:06 PM	#3
Larry64 Registered User Join Date: Sep 2011 Location: Lewisburg, TN Posts: 315	Re: 3rd brake light Jimmy the brown, green or yellow wire. Thanks __________________ Never drive faster than your Guardian Angel can fly Larry

10-09-2015, 08:09 PM	#4
joedoh Senior Member Join Date: May 2007 Location: Doodah Kansas Posts: 7,773	Re: 3rd brake light white at the switch. dont use the brown, its parking lights, dont use the yellow or green those are turn/brake, your third brake light will flash with whichever turn signal wire you use. as jimmy said, get it at the switch, it is the white. __________________ the mass of men live lives of quiet desperation if there is a problem, I can have it. new project WAYNE http://67-72chevytrucks.com/vboard/s...d.php?t=844393

10-09-2015, 08:11 PM	#5
Larry64 Registered User Join Date: Sep 2011 Location: Lewisburg, TN Posts: 315	Re: 3rd brake light Thanks __________________ Never drive faster than your Guardian Angel can fly Larry

10-09-2015, 08:10 PM	#6
PGSigns Senior Member Join Date: Jan 2011 Location: Hayes Va Posts: 4,569	Re: 3rd brake light With a test light one side is hot all the time and the other side the switch will only be hot when the pedal is pushed. That is the side you need. Jimmy __________________ 60 to 66 Chevy and GMC window decals http://67-72chevytrucks.com/vboard/s...d.php?t=661131 Good friends, good food and a hotrod what else do you need? 1966 BBW long fleet Daily driver 1965 BBW short fleet Sold and going to a good home 1965 Suburban 2003 3500 Duramax 2005 Ultra Classic



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