Wiring diagram

Hey folks,

1972 4spd 454 car.

Problem:
Brake warning light will not go out. Brakes feel good. Park brake been tested. Different illumination when I apply it.
Removed the wire from proportioning valve and the light remained on. Grounded the same wire, light remained on.
I have gone through all the wiring diagrams and can't locate a diagram that has this in it. Any help ?

Other issue:
Headlamp warning light on dash comes on. I was told and found through a diagram that there is a micro switch that monitors the door being closed.
The light is off when driving, headlight doors closed.
The light flickers on when driving below 5 mph and comes on fully at a stop light.
Thinking that the windflower at regular driving speeds of 30 mph keep the doors closed/down just enough to make contact with micro switch ? Thoughts ?

Thanks in advance and will post pics.

Cheers.

Ryan

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Wiring diagram