Something that is neat and different on police bikes is that they have a small tube that runs thru the fuel tank to the box on top of the tank...for the electrical wires of the radio.... neat... I have a police tank on my bike so I can run the electrical wires to my heated vest... I made a small cardboard tank bag that fit the opening perfectly then took it to my pal the upholsterer and had him make a leather tank bag with a space for the plug to come out... it is out of sight and works neat... love it on cold days.