Just bought a model 84014 K4s loco. It has only a DC lighting board. The tender-to-loco connection is a 4 + 2 pin plug setup. Was wondering if anyone has figured out the color codes.

I am assuming the following:

2-pin plug with red and black wires is the motor.
4-pin connector (Orange, Red (yes, another Red) Green, Brown) is for lighting, front and rear on the loco, but don't know which is which.
Since I think this is a DC loco, I will need to swap out the bulbs for LEDs.

Installing a TCS WOWSound WSK-BAC-7 card.

I am multimeter-equipped, just trying to get the board wiring right before I disassemble the loco to do the lights.

All help greatly appreciated.