ok well the vacuum hose is easy. That connects to one of the outlets on the back of the inlet manifold.

Black goes to earth (brown on ford wiring)
Purple goes to dash lights (grey with yellow stripe on ford wiring)

The others Im not 100% sure on but it looks like Yellow goes to perminant live (red on ford wiring) and the orange to a switched ignition live (yellow on ford wiring)

I would advise cutting into a circuit that can be easily removed without messing upt he original wiring.

What Ive done on mine is I've tapped into the ISO connector lead that converts the standard ford headunit wiring to ISO (for use in connecting any new stereo) that way I havent cut into the original ford loom.