All right Sparky - get your spare fuses and clip leads ready. The electrical system in the MG appears to be all original with a few creative additions. Few of the lights worked at all and I wasn't sure I even had brake lights. Time to learn about Lucas electrical systems.
From what I could tell the system under the hood was all original. I found what appears to the under hood main junction box with only two fuses. After probing and testing I found a bundle of loose and unconnected wires. After a few hours sorting the color code and finding the proper connections almost everything worked.
I needed to remove, clean and adjust the brake light switch - it had simply corroded internally. A little emery file and it was brake lights again. Who thought just getting the lights to work would be so much fun...
Headlights, Turn signals, Parking lights and Fog light all on at the same time.
Brake lights, Parking lights and Turn Signals