Illuminating concept...

Originally, Opel engineers relied on two micro switches buried deep in the headlight assembly to switch  the headlight relay.  Apparently, these have been a constant source of grief for the owner, so I wanted to figure out a better way.  This is what I came up with....

It's a motorcycle brake light switch that was mounted on the headlight lever.  As the lever is pushed to expose the headlights, the assemble pulls on the switch and connects the circuit to turn the headlight relay on.  I wired it exactly like a horn relay as the switch only activates the ground of the relay coil.  This way, it's very low current draw and you only have to run one wire.  Should be able to get it all hooked up this evening...