I have a camper shell that has no brake light and I want to add a stock 3rd brake light to the back of it. Does anyone have a technical drawing or template for cutting out the slot for it? I want to make sure I get the placement in the curve right.

 

Welcome to the forum

There isn't a curve to match, they are sitting on flat surface just above window on the cab, just order one and try it out, or take off yours to use

Just a heads up unless you have a 1993 to 1999 Ranger, just these years have a separate brake light wire in the rear, all other years have turn/brake combo wire for each side, so you would need to run a wire into the cab and to the brake light switch or intercept the wire going to 3rd brake light, dark green wire, its on the brake switch as well