I finally got the chance to investigate the existing bars and grips today.
The bars have a hole drilled through each side, close to the centre brace, so that was encouraging.
I took the twistgrip off, and just inboard of the threaded end (on to which the end weight is screwed) there is an opening in the bar which seems likely to be for the wiring from the heated grip to run.
So far, so good.
On the l/h bar, the grip is glued in place, so I cut around the bar to loosen the grip on the last inch or so, expecting to find an opening for the h/g wiring (like the r/h bar.)
No such luck! So it looks like I have a centre-section handlebar designed for h/g wiring, a r/h end which suits the h/g's, but a l/h end that doesn't.
I think I'll attack the l/h end with drill/grinder/file, as necessary, to form a recess for the wiring, to replicate the r/h one.
I'll order the BMW grip kit (h/grips + switch&wiring) in the meantime, and keep you posted (I bet you can't wait........!)
A picture or two of these holes in your bars would be much appreciated
until you go through a 30 limit and feel a bit feeble heat creeping through.
