Wiring fire, advice sought!

Guys, been away a few days. I cut out the bulkhead connector, fitted a 37A rated wire and fitted a slow burn fuse (not fusible link) rated at 60A. I also bought slow burn fuses rated at 30 and 40A.
I have had no problems since this partial re-wire job. However, slightly confused by different opinions being offered here. should I fit a lower than 60a fuse now?