New guy here. 74 Apollo, first buick ever! This car is an old drag car I'm returning to the street. It has original wiring harness. I've got all the lights and signals working, but no brake lights. Checked the switch and plunger at the pedal, it's all there. There is an orange and white wire connected, but neither has power to or from it. Shouldn't there be power there? Those 2 wires are part of the harness. Where do they go and where should the power be coming from? Second. The harness that runs to back of the car has been cut into. There are 3 wires that have been cut. One of those is orange, which has constant power. The other 2 are dead. Any thoughts there? Trying to avoid buying a new harness and starting over, but might have to. Appreciate any input. If anyone has a good, simple diagram of wiring for this car, that would help too. Thanks a lot!