I'm working on a 99 gmc yukon. I just replaced the stop, hazard. cruise, etc, switch. Everything works (haven't tested the cruise control yet) except for the brake lights. The third brake light does work. I don't have any electrical diagrams. There is a connector with one black and one green wire coming out of the new switch. I can't find a connector to match. Is that connector for the brake lights? Where is the matching connector. Does it come off the brake light switch? Please help.
Update.
The two wire connector with one green and one black wire is for the cruise control.

 

do you know what the VIN of the truck is. I can pull some exterior wiring diagrams for you if you want them

 

here are the diagrams I could provide. I hope they are helpful to you

 

The VIN is 1GKEK13R6XJ764380. Thank you.

 

Thanks for the info. Much appreciated but I have this one. Its the only one I could find but something is wrong. The turn/hazard switch is new. Everything is working now except for the brake lights. The brake switch is good. There's power at the "A" Terminal but not at the "B" terminal until I activate the switch so the switch is working and I have power going into the turn/hazard switch. From then on I'm at a loss because the electrical diagram doesn't seem to jive with the wires. Every fuse box diagram I've seen looks like this one. My fuse box does not have a "brake lamp relay" nor does it have a "stop/hazard" fuse. It was like this before all the problems started so I'm thinking I may need a different schematic. Thanks for your help.

 

Thank you Suburban Dude. Your diagram saved the day. Its a better quality diagram than what I had and I was able to follow the circuit to find the problem. Turns out that the pin in the connector that sends power to the turn/hazard switch was not connecting to the wire. All fixed now. Thanks again. Cheers.

 

yeah no problem. I guess that's some great perks to being in shop class in high school