See one solution [HERE]. (There are many!)
This one is relatively cheap, and easy to maintain once in place. There is a bracket under the nose to bold a piece of angled "flat bar" to. I used actual FLAT "flat bar" at first, but it bounced more than I liked.
They are independently switched, and I only turn them on:
A) during the day time to make me more visible
B) on dark roads with no oncoming traffic.
Cheap, easy to install.... (see the photos in the linked post).
The switch wiring is also shown well [HERE].