James,

Take a close look at the bulb connector.  It may be a corrosion problem.

On mine ('85GL) the parking & T.S. lights are the same bulb but use
different filaments (2 pins plus shell).  One connector pin basically
disappeared due to corrosion.  No choice but to replace connector assembly.
This time using silicon grease to better weather proof the assembly.

Hope that helps,
Jack Cook

On 4 Sep 2003, at 15:39, James V wrote:

> The front passenger side parking light/corner marker on my van doesn't work,
> but the turn signal does.  I had this problem before, but then it started
> working again.  So, assume it's a loose connection of some sort.  Since it's
> the same light, the bulb is obviously working.  What might the problem be and
> where should I look to troubleshoot?
>
> Thanks,
>
> James
> 90 Carat