Is your converter a "powered" model?
Yes.
Is it a trunk from an Interstate? They didn't come with an "accessorie" inside light.
Yes its from an Intersate. When reading the IS wiring diagram and service manual, it calls the bulbs closest to center next to the brake lights "accessory lights".
Not sure if this what you want Thag, but the inner lights are run only, the outer lights are run, stop, turn. If you want the inner to be stop, you may have to come up with another type bulb because of the singel filament in the run only bulb.
Thats what I needed to know. I didn't think the outer ones are run / turn / brake, but I never had an Interstate. I wonder if they make a small dual filament bulb.
Thanks for all the responses. Just gonna take some working with I guess.