Just whizzed this off one of Tabethas posts:
RED/BLUE = PERMANENT LIVE
BLACK = SWITCHED LIVE(ignition switch)
BLACK/RED = FUEL PUMP(live)
BROWN/WHITE TEMP GAUGE
2wd have thin green which is tacho and a brown/red which is air con leading to a purple relay taped to loom.
BROWN/GREEN should be oil pressure warning light.

Do a search for 'engine loom colours' its been covered a few times. The plug should be up near the bulkhead somewhere, but if its not there for any reason, its easy enough to hard wire.

HTH