Saneagle.....Success !! Had a session with the MULIMETER today.....chopped off the old throttle plug..bared the wires and applied 5V and Ground to the throttle and monitored the GREY to ground...It indeed varied voltage up to 5v....so at least the throttle is working !! ticked that off the list.
Bared the wires on the chopped off plug and placed it in the Bicycle connector. Initially I could not find the 5v supplied by the bike, trying every wire combination of the 3 leads, only to discover I had bent a pin when inserting into the socket, gggrrrrr !!
Having found the 5v after correcting the pin issue, the only one left was the throttle wire. !!
Connecting all 3 wires now using flying croc leads, it was just a matter of setting up P09 and P10, messed around and VOILA !! the motor kicked in with the throttle twist....
Anyway !!! the gist of all the above goes back to your initial statement, it was all down to matching the throttle wires to the bike wires as indeed the wiring was not colour matched as you would expect.
Ordered a decent 3 pin MALE and FEMALE connector, which I will transplant when it comes, still want it pluggable !
I only write the above in the hope it will assist anyone else with HITWAY BK11 Throttle issues.
Thank You for all the support !!! Appreciate It.....