Part of my "oil change kit" is 2 spring clip clothes pins, painted red with "NO OIL" written on them. One goes on the key ring that I have removed from the bike, car, lawn tractor or what ever else I could harm. The other gets clipped to a highly visible (mirror, switch cover, shift lever, etc.) area. The Electra Glide ign. gets locked, because the clothes pin doesn't fit the big switch.
