[fbrown]

It would make sense that the courtesy light to light with the door switch in a convertible since there is otherwise no interior lighting. I was looking at the diagram show below to make my assumptions. Unfortunately no mention is made of convertible only wiring.

There had been a connector pushed on the secondary ground point on my car, so I assumed I had missing wiring. Of course this wire was missing when I took the car apart so I have no idea as to where it had been connected.



Oh the joys of assembling a car when lots of it was missing, you don't know how it worked originally, or how it was put together.

By the way... I believe the light will get a good ground just with the screw in the dash. I checked that metal hardpoint where courtesy light mounts into and it's got good continuity with the exposed metal parts of the dash over the instrument panel.

This probably works OK with the OEM dash, although it appears that the source of the ground is the metal clips at the top of the dash pad, where they hold the padded dash pad against the top of metal dash. In my case I have to run a separate ground since my aftermarket dash pad doesn't have a metal core or if its does, only small pieces of metal to stiffen the dash pad. Personally. even if using the OEM dash, I would still run a separate ground wire to the courtesy light just to be sure there are no grounding problems later.