IM not sure exactly what ur trying to do. I replaced my 95 tranny with a 98 tranny and now with a 1 off tranny with custom planets etc. Everything bolted on fine only thing that was different was 1 of the sensors had to be swapped out. Range sensor I beleive.

If your not getting ur rev lights to work. Are you getting rev at all? There is a sensor on the valve body inside the tranny that moves as u shift gears, it allows the tranny to know what gear it is in. Maybe something is faulty there, but again still not sure what ur trying to do and no offense buit the wiring looks poor, those should all be souldered and shrinked wrapped.