With the plug slot up, looking at the plug on the camper:
the 1 o'clock pin is open
the 3 o'clock pin is right turn and stop - Brown - 16 gauge
the 5 o'clock pin is left turn and stop - red- 16 gauge
the 7 o'clock pin is 12 volt power - black - 8 gauge
the 9 o'clock pin is back up lights - yellow - 16 gauge
the 11 o'clock pin is running lights - green - 14 gauge
Center pin is ground - white
Hopes this helps