sounds right but my car is not close to check , the door switch is delayed I believe , I can't remember where the seatbelt switch is though
When Got my SE, none of the overhead console lamps worked. The door ajar (DA) and seat belt (SB) lamps are independent of each other. If they are both on at the same time, they are just bridged.
The SB lamp is controlled by a timer device and will shut off after 20-30 seconds after the last door is closed. There is nothing to do with the belts being fastened (ie: a switch controlled by a retractor or buckle) that controls the SB lamp, purely a timer. One of the terminals of the dome lamp pin switch in each door jamb controls the SB lamp.
The DA lamp is controlled by a separate pin switch in the trailing edge of the door jamb. I had to replace mine and keeping these adjusted is a pain in the arse. If not adjusted right, the DA lamp will stay lit. The wiring on the switches then run up to the console and apply ground for the lamp. It sounds like it would be these switches and the wiring that need to be attended-to to get the DA lamp to work appropriately.
I dont know if your low fuel lamp works or not. Mine didn't . I had to get a new relay and once installed, the low fuel lamp worked perfect.