@Yrkoon Sorry I meant do they plug straight into the receiver, I get the two little black boxes mixed up!
That's the lighting set that came with the Land Rover. I suppose it is capable of more complex lighting for other vehicles like you say. But for head lights and rear lights it feels too much. Quite a few additional wires, connections and another black box to find a place for and keep tidy.
Yes it is a King Yellow.
The margarine serves two purposes. It holds all the self tapping screws securely for each step of the assembly instructions, I place them tip side into the spread for easy access when needed. Then the slippery tips screw much more easily into the fresh plastic, like a hot knife through .... butter. Works really well with the harder plastic - ABS?