I'm in the process of fitting a high level brake light in the rear window of my Ford Fiesta 1.25 Ghia. However, I can't identify which wire in the tail light cluster block I need to connect the high level brake light to. I tried the purple and black wires, but couldn't get the high level to illuminate. I've taken a spur off of an earth terminal within the boot area to earth the high level. Any help would be gratefully received.

Steve McKay-Salt, July 2008

Steve, The brake light supply is the purple wire

nigel, July 2008

use a meter or a testing lamp to identify which wire feeds the brake light .get a friend to press brake pedal while you try and locate it

John, July 2008