I just added an inverter to my 2003 Ultra Supreme 33'. The converter is located at the foot of the bed. I removed the plywood over the converter and added #8 guage wire to the battery connections coming into the converter. I cut an appropriate size hole in the side of the bed box, added a shelf to hold the inverter, and hooked up the #8 wire. Works fine.
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2003 Gulf Stream Ultra Supreme 33' 8328
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