Help with brake lights and wipers '72 Duster

Brake wires are almost always pink and white. It's not a hole or holes that the switch mounts in. It's a long slide slot to adjust the switch. The switch has one bolt and a tab at the end that also goes into the slot. I'll post pics tomorrow. The quickest way to test the ground on the wiper motor is to attach a battery jump cable from the ground on the battery and clip the other side somewhere on the metal of the wiper motor. (or rub it on the motor case until it moves)