Automotive Circuit Fault Probe Tester Portable High-Precision 20A 48V Car Tester. 【Easy to operate】 First, remove the blade fuse from the socket, then remove the vehicle's fuse. Insert the tester's safety plug into the wiring harness socket, and after ensuring the circuit protection device is in place, insert it into the vehicle's fuse socket (maximum load 20A/48V).
