Hey casper thanks for the reply
from what I tested the engine is cranking nicely if I short the strarted solenoid to +ve side of battery but wont do anything at all if I try to start it with the ignition key and also no power.
The external regulator harness is now disconnected for the alternator with internal regulator
checked the fuse under the dash/steering side and no blown fuse/fuses

*remember this no power problem only occured while on alternator swap