[OG68]

Check your parking brake first. It may not be releasing fully allowing the brake light to stay on. If ok, then check the hydraulic side.

Pull the tan wire off the distribution valve and see if the light goes out. If it does you need to reset the internal switch mechanism by creating a pressure differential between the front and rear brakes.
Reconnect the tan wire and slightly open a bleeder on the front or rear brakes. Gently press on the brake pedal with the ignition "ON' to monitor the brake light. If no change, open a bleeder valve on the other end and re-try.
If you remember whether it was the front or rear brakes you bled from last, try the opposite end first.