How do I know the difference between a front & back light? Donna Post October 27, 2016 19:46 Updated Follow Front is always white, back is red. Except in the Avenue Dual Lighting System Set as the lights can be front or back Related articles How long will a single charge last? How many modes do the lights offer? Are Kryptonite front and rear lights waterproof? How bright is my light? How do I switch my light on? Comments 0 comments Article is closed for comments.