Playing around with replacing the original teardrop external BMW switch with a lighted dash switch for the driving lights.
Switch is a Carling Contura III, bought on eBay for $8.00
Using a 'beta dash" that I can cut up, the switch #1 does not fit depth-wise, #2 is about 1mm too wide, #3 spring retainers work well.
Tried cutting the bottom shelf out of the dash pad, with slight shaving of the sides. Switch then fit nicely but was not flush since the dash has a peak where the switch fulcrum is.
Cut 1.5mm along the side of the switch well, removing the triangle sections of rubber. Switch now sits flush.
The underside leaves just enough room to clear the handlebar clamp hex bolts, and I may try cutting the plastic partitions on the switch to bend the leads 90 degrees and gain about 5mm more clearance.
Just an exercise in "hmmmm, wonder if this'll work."