sidevalve
Über Member
A "back up" rear light is a good plan. It doesn't have to be anything expensive, a cheapo LED job will do. Just something to cover your a--se if something "happens" to your main light.If possible you want two lights each front and back.
That way if one stops working, you still have a backup light.
Plus in traffic running one in solid mode and the other one in flashing mode is safer.