The converter in my TM also came with two orange 40amp fuses. The schematic in the TM manual doesn’t show them but they are labeled as reverse polarity fuses in the converter. Curiosity got the best of me so I removed them both then tried all the 12V systems in the TM, everything worked. Looks like they are a link between the converter and the 12V buss
so no surprises there. I wasn’t connected to shore power at the time. Next time I’m on shore power I’ll disconnect the batteries before removing them and see what happens. I’m guessing that none of the 12V systems will work. Like ferdoh, I found spares at NAPA.
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