I couldn't tell u which sensors ain't required but all is best
U must bypass the side stand switch otherwise it won't start
U must install a clutch switch otherwise the ecu will use a neutral map and run with less power (not like u have a power issue)
U must bypass the ignition switch
U must have the tip over sensor,its hard to bypass and it's good to have in the event of a tip over
the O2 sensor is also reqired as it will mess with the ecu
the gear position sensor should be a 3 pin plug coming out of the L/H side of the trans case
the cam shaft postion sensor is in the rocker cover
the oil level sensor
the speedo sensor is in the drive gear case but thats not required
here is a wiring diagram for my K7
this should still apply just check some colours on your engine on circuits u can identify
there is also a pic of how to bypass the ingnition and side stand
(made by camel from the wa superlites, local genius with everything from wiring to machining)
find the colours of the cut wires and open plugs and post them back here so we came help
dont forget some plugs are for lights and some may be for a thermo fan if he didnt use the origonal circuit
on the frame i also dont like it at all
for that frame a 250 is huge let alone a 600 sports bike
id find a buggy or build one
look into edge buggies
www.edge.au.com
and badland buggies
http://www.badlandbuggy.com/
iv put the gsxr600 k7 into a piranha edge buggy