sorry had some cans picture above

90 rebuild an up to the wiring part and have these wire not sure where they go
blue/black
green/brown
green
gray/red
black they come out just below air filter on the engine loom
its a 300 tdi
parts not wired up are rev-light diff lock switch hand brake switch
are these the wires can any on help am lost and dizzy chasing my tail for 2 days