PlayStation Minor Fault Query? East Coast Preserve Collection Cab Lights?

When you turn the cab lights on (377) should it just be the far right light in the ceiling that activates? When in a tunnel or at night the cab is incredibly dark - can't see any buttons or switches.....? it looks like there are 4 ceiling lights but as mentioned only far right one activates.
I know there is a mini side light but that offers little illumination either.

 

If you look by the bottom of the cab door there is a button to the side of it that turns on all of the lights.

 

Gr8 - thnx again......