I have the B&M Lumotec IQ Cyo T Senso Plus front light and it comes with the wire you need to connect the rear light. I brought the B&M toplight line plus rear and it works a treat, The rear light will stay on for about 4 minutes when u stop the light bolts to my rear rack so its a solid fit, And unless you have the right size spanner on you its hard to steal...but its a solid light only no flash option.