70 C10 Dash Light Question

[tobascofred]

I took my dash out to replace the temperature gauge - I was not careful enough getting it out - I have one quarter turn light socket that comes from the steering wheel wire bundle and I do not know which dash socket it is for? I believe there are a total of seven sockets (four dash lights, one brake warning, one oil pressure and the high beam indicator). According to the wiring diagram all dash light feeds come through the connector, not anything straight from the steering wheel bundle. The high beam indicator does not work at all, with a regular bulb or the steering wheel one - anyone know what the light from the steering wheel column bundle would be for?