I got the switch from Advance Auto Parts for $40 and installed on my 690 a few days ago.  Works great.  Put a little Teflon tape around the threads and used the o-ring that came with it.  Great mod.  Rode 100+ miles in some nasty offroad jeep type roads and some black top.  Never went over 1 bar above half way.

What was the part # on the box? No advanced auto in canada and cross refrencing is tricky. Thanks!