When wiring two 12 volt batteries in parallel it's positive to positive, negative to negative.
Then, connect the frame ground cable to one negative terminal and connect the cable that feeds the trailer power panel to the positive terminal at the opposite corner.
This equalizes the effect of different power path distances in the battery combination.
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2018 Flagstaff Micro Lite 25BDS
2023 f-150 SCREW XLT 3.5 Ecoboost (The result of a $68,000 oil change )
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