Smallport loom right???

Black / orange is the power input for your injectors / coil...
Black / red will most likely feed power to the FOC relay inside the cabin

Factory setup for the ae92 smallport has 2x black / red trace wires.. The thicker of the 2 has constant power and the thinner plugs into the output of the efi relay and powers up your B+ to the ecu and also the fuel pump relay.

It's ran across the bay because in the ke you grab coil power from the drivers side. The ae71 i've got has the coil power on the passenger side, but this could have been changed by the person i got it from.

The black wire at a guess i'd say is tacho, basing that on the coil location on the ke70, but trace it out with a multimeter first.