hey guys i got a 1988 ea falcon and its craked the s**t i done an el dash conversion everything worked fine then my battery s**t itself and got left for about 2 weeks dead then i put in a new gearbox n not sure if the wires are on the right plugs on that if that helps either and now the only place i have power to is the instrument cluster and the clock have no idea whats wrong all the fuses are fine in the fuse box not sure what else it can be but im slowly pullin apart all the things ive played with recently to see what it could be but any ideas will help

any help much appreciated