My borrowed Snapon DTAC Elite which reads DC amps had a broken inductive pickup, so read 0 amps when around grip wire while on high setting. Both grips get equally hot on high setting that previously blew the 10A fuse. Riding 10 minutes on high setting did not blow the 15A fuse, so I guess I am done. Kinda sad because the Oxford grips are supposed to be protected by a 5A fuse when on a circuit by themselves. The only other accessory I have on that circuit is my top box brake lights but they are led and are working properly.