I found a deal on a topper for my 06 quad cab, but I can't figure out how to wire the break light on the topper. Can anyone help a guy out?

 

Buy a plug kit that plugs into the trailer light harness and wire it in. Or if you are familiar with automotive wiring, you can wire it into the brake light circuit as long as the current draw is minimal

 

I think the stop light wire is White, with a tan stripe.

 

There is a taped off wire under the bed that is white and brown I think. That is for the Center High Mount Stop light if you want to do it properly. Should be on the driver side. It is there just for a camper top/shell.

 

See this thread.