Could'a sworn I had a rear brake light switch...

[motogroove]

2001 xc300,
as featured in the bare frame rebuild thread...

Sorting out all my wire routing and I find I have misplaced my rear brake light switch. I took lots of photos and I don't see traces there either. I have the 3 wires (yellow, purple, and yellow with green) that run back to the rear master cylinder, marked to go to yellow, yellow and black.

I can't even remember what the switch looked like or where it went
Any clues in word or photo will be very helpful in jump starting my cranial search engine.

This is why you shouldn't leave them apart for months.

(The last critical parts are due here today (bottom shock bolt and carb cable). Warm it up tomorrow. Race it Saturday. The weather looks good. Come join us at Southwick.)

Thanks for any help.
-Dean