When I restored my old Eldorado, most of the electrical components were shot so I decided to build my own,
For the turn signal and H/L switch I used 2 Amp reed switches under the brass plate operated by tiny magnets in the levers, there is no mechanical connection between the lever and the switch. The brake light switches are also reed type.
Later on I decided to make the signals self canceling when I operate the clutch lever.
It looks pretty crude but works surprisingly well and create a lot of interest.
Sorry it's a bit off topic.