Do you have to do anything extra to convert a 75 to use aftermarket LED head/tail lights? I've heard that you might have to add some resistors in the circuit but haven't seen anything positive either way. Also how big a battery do you need to run lights. Would the one from Mike's work? Bike I'm building has no electric starter. So all I need is lights, and then for only occasional use not for after dark long time riding. (Day cruiser/trip thing)