3rd brake light on 69 burban???

[oveeets]

I'm adding a led third brake light to my 1969 suburban.. What is best way to wire it so only come on when braking ????
I'm starting w/ a 1157 gm housing that has 2 black wires and 1 white..w/ a 1157 led bulb.

[FLEET72]

Originally Posted by oveeets

I'm adding a led third brake light to my 1969 suburban.. What is best way to wire it so only come on when braking ????
I'm starting w/ a 1157 gm housing that has 2 black wires and 1 white..w/ a 1157 led bulb.

Give it it's own wire. Tap in between the brake light switch and turn signal switch.

Wiring diagram *2.7M file hosted by timcos, to be sure to thank him.

[Longhorn Man]

You can do it with no splicing even.
Go to the brake light switch on the pedal. Unplug it, and figure which wire is hot. (I can't remember off the top of my head)
Now, slip a ire into the plug, on the non hot side of the plug, and plug the harnes back into the switch. It'll be hard to plug it back in, but you can get it on there. Run the wire back to the 3rd brake lamp, and hook it to the wire that lights up the bright side of the bulb. If the assembly doesn't ground it's self, then just take the ground wire of that 3rd brake light plug, and ground it with one of the bolts/screws that mount it to the body of the burb.