Not sure I understand your question. A converter is normally that device that converts incoming AC power to DC for use in the RV and to charge the batteries. I’ve never seen on that wasn’t hardwired. If the dealer replaced it, the wiring must have been there for the original. Time for a new repairman?
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2006 Gulf Stream Friendship G7
350 Cat, Crusier Lift w/ Honda VTX
Blue Ox and 2019 Chevy Blazer RS AWD V6
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