Those are 12V self resetting circuit breakers. They protect most of the 12V supply systems. The left one feeds the hydraulics and is frequently replaced by an 80 amp version. Do a search on self resetting breaker and you will find lots of discussion about this beast.
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Carl (n Susan)
There is more to life than fuel mileage.
2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB
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