"Re the JLF wiring harness for the joysticks - I cannot see any indicator for pins L R U D.  The white connector only has 5 wires labelled 1 2 3 4 5 (1 is black being the ground, 2 is green, 3 is yellow, 4 is orange and 5 is red).  Does a colour correspond with L R U D on the joystick?"

Have a look at the chart I posted, that will tell you the colour codes.