Your box is much different than mine.
My control box only has 3 sockets on it. It's a UniSteer/Electra-Steer kit, p/n 8051500.
One connector for the steering motor, one for the steering position encoder, and another with 8 wires.
The 8 wire connector has 2 for battery connection, red & black
Orange for an LED (so you know it's active)
Green for Key on and to the other side of the LED
White and Purple wires for some code reader interface we don't use.
Blue & yellow wires that we don't use. I asked Unisteer what they were for, they said they had no idea.