brake switch problems help!

[63chevyfleet]

on my 63 my brake switch by the pedal. im trying to see wut wires got to that because the previous owner ran a wire from the switch all the way to the back were the tail light wires are then it is tapped in the tail light wire's. the wire that he ran was for the brake lights to go on when at a stop. so can anyone one help with a diagram of just that if not then type in words if possible thanks!!!!!