Hey all. I'm looking for an electrical system schematic for a 2002 HD F-150. After 3-4 hours of looking I have given up. The point of this diagram is so I can install a cutoff switch for my brake lights (for certain times when you don't want certain people to see you exit off certain highways.) I have a switch ready but I don't know which wires to cut and install to this switch. Any help for the website, or even pictures, would be great.

 

I know I have posted this a few times before, but here it is :



This is the BPP ( Brake Pedal Position ) Switch, on the brake pedal lever.
If you unplug this, and press on the brake pedal, you should have no brake lamps ( either of the S/T/T housings or the CHMSL ).
Once you confirm that, install the external switch on the wire on either side of the BPP switch. Your turn signals should ( will ) still work.
Remember, without functioning brake lamps, when you start the truck you will not be able to get the truck out of park ( 97-03 MY the brake lamp circuit is the same ckt for the shift interlock ).

I do not want to know what you are talking about, so the details on why keep to a minimum.

 

Thanks man. That deff helps a lot.I'll give it a shot and let you guys know how it works out.

 

Found the electrical cables that lead to the brake lights. Pulled them off and the brake lights don't come on. The tail lights are still on but that works for what I want too. Great help with that schematic, led me to the right place.