don't look at the number of wires.
black/brown = rear running light and license plate light
green/yellow = rear brake light
orange = left indicator
blue = right indicator
green = ground
there are 3 black/browns in the back of the bike, are all spliced together locally. you only need to use one of them
there are 2 green/yellows, they are spliced together, you only need to use one
there are 5 greens, they are all spliced together, you only need to use one.
don't over think this, it's very very simple.
the hotbodies will have a wire for right signal, connect that to blue. the wire for the left signal connect to orange. the two wires for running lights connect to black/brown, the two wires for brake lights connect to green/yellow, the two ground wires connect to green.
that's all. couldn't be easier.