My notes for these got ruined. Anyone know what they are for? It will save me time, not looking. Thanks, TimsZ

Thats a ground for the interior light. It activates when you open the door. Your photo is missing the metal pillar insert.

The metal insert fits into the body and the plastic "plunger" piece pushes in through the back of the insert. The cable is then srewed into the plastic "plunger". Everytime the door closes, it will push the plunger in and disconnect the ground to the light.

It doesn't look like its of a Z.

Tim,

Try looking at your emergency brake handle. I think you will find the location for your parts there. The plastic bit and spring is the switch for your "Brake" light and the wire is the ground. Hope you are successful rejoining your componentry!

Thanks, I seen it on e-bay shortly after I posted pic.