There are 2 possibilities here, first the switch that the passenger side top latch hook activates, it is mounted inside the windshield header.
The second is the "top opened" switch that is located just above the passenger's ear in the top frame.
Check them out.
Are you sure that BOTH latch hooks are being activated by the "D" handle ?
( there have been reports of the linkage from the "D" handle to the hooks falling off )