Thanks for all the replies so far!
@gunrunnerjohn posted:I suspect you could just tap into the cab light pin on the PS/3 board and wire in a proper cab light with an LED. That way the cab light would be on when stopped and turn off when moving, just like you'd expect it to do in real life.
That's a decent chance they're even a Molex connector for the cab light inside...
Click on image to enlarge
I thought about that at first, but I was a bit nervous about tinkering with the wires on the board. I'm mot sure how fragile the connections are and I don't want to ruin this brand new board.
Does the 40 pin bar come out fairly easily?