Another bulb doesn't work question

These bulbs require a grounded in the form of the door switches OR the headlight switch switched all the way counter clockwise ( or clockwise, don't recall)

With power to the socket that means one or both door switches and / or the headlight switch and /or wiring from the bulbs to the switches is the issue.

My assumptions are standard incondescent bulbs and they are tested working and they are the correct ones for the socket.