Don't know about 53, but my 51 has two fuses on the firewall driver's side for the tail light and brake light. Everything else goes through the light switch which has a bimetallic breaker. My heater motor has an inline fuse, but it was an option, I believe. Hope that is some help.

Mark


1951 Chevy 3100
Some days you get the bear. Some days the bear gets you.