TERRANO WIREING DAIGRAM

HI EVERYBODY,
After asking the wrong person, the right question ( Q. "Are there any computers?" A. "No. Never seen one on these!!!!...") and believing the answer I put a TD27T with a RE4RO1A g/box (FROM A 95 TERRANO IMPORTED 1/2 CUT) into my 86 navara. I've mamaged to find computers ("They must be in the back, that went to the crusher in Japan!!!!....sorry") and get going, in limp home mode.
I'm now in need of either a book or the name of a book or a copy of the pages that has any or all of the following:-
computer error codes.
computer pin codes.
computer wire colour codes.
computer pin voltages.
general motor-g/box wire colour codes.

I know it is a big ask to get this much help, but after "limping home" for the past 20,000km I'll be very gratefull for all help I can get and will return the favour, if possible.