I carry a roll of duct tape to keep my spit cup upright! I went on a cruise with a bunch of like-minded folks when my truck stalled and would not fire. As I discovered several days later, I had an intermittently malfunctioning ballast resistor - no juice to the coil until I hit the right bump in the road. Fortunately one of the guys had a piece of wire with alligator clips on each end so I could jump juice directly from the the hot wire on the starter to the coil and stop obstructing traffic on the Chesapeake Bay Bridge Tunnel on a busy Saturday. Without that prefabricated jumper wire, I would have backed up traffic for miles before I could have rerouted some wires to get Sweet Pea down the road.