I have tryed it on my 1100GS, but realised there are 2 bulbs/instrument
So I ended up only making the speedometer and left the revmeter alone. It ended up well, I was satisfyed with the result, but keep in mind that you have to use large angle LED's like 120 degrees or so for the best effect.
I just coloured mine with a marker pen as I found the std bulbs to be too bright.
It was a temporary measure before a trial about three years ago!!!!
Only just replaced them with orange bulbs as a couple had blown anyway.
I brought some from hi somthing leds, since then keep sending me ad's!. Not bright enough to see speedo properly look nice but had to remove them for the original ulbs.
Dave GS