If you have the WFCO 8900 series distribution panel there will be no reverse polarity fuses mounted in that panel.
Additionally there are no reverse polarity fuses mounted on the converter itself
http://www.trekwood.com/products/411...Circuits-Black
Hopefully you will have a different style distribution center and converter installed. If not this WFCO is hard mounted in the distribution panel but can be replaced with one that actually has reverse polarity fuses and not hard wired into the AC bus like this one is.
Just replaced this unit on neighbors 2014 bullet.
Only fuse in this circuit is a hard soldered fuse on the circuit bird itself.