Which fuse do I use for this radio? Shawn December 21, 2016 22:10 A 15 amp fuse should be used with both the 955 & 655. Related articles What size fuse is recommended for the inline holder? What fuse do I need for the SR-955HPC? What are the dimensions of the 655 & 955? Fuse size (amps) for SR-497HPC? Why does the radio's meter show less power output than my external watt meter? Comments 0 comments Article is closed for comments.