I'm looking for a low-current clamp-on DC current meter to use as a current indicator; anything else that might work as a current/no-current check device would be great as well. The quicker a single check can be performed the better as I'll be checking 30 wires on a regular basis.
I've thought about using LEDs in series but two problems arise. The wires will be moved regularly so I would need wires and strain relief to ensure the LED legs do not break off and more importantly, the voltage across the loads is changed dynamically and is measured inside the power supply. Using one load for sensing is not an option in case of a single failure and approximating the voltage drop will only be okay if all LEDs are guaranteed to be within +/- .1V of each other and have a constant voltage drop throughout use at slightly varying room temperatures and humidities.