[Dieselwrencher]

I've had several power probes over the years and I absolutely love them. I haven't broken down and gotten the latest one yet that can do resistance and all the other stuff. I doubt you'll find one cordless because the cord is to hook the unit to the vehicle's battery. If you didn't have a cord the power source would have to be integrated into the tool. The cord really isn't that bad to navigate around IMO. These are so darn handy. I rarely use a conventional test light anymore for troubleshooting. The nice thing about the probe is being able to apply power or grounds to a circuit. It will also tell you if you are dealing with a complete or open circuit. The hook units actually have an adapter to help isolate open/broken/shorted wires.