Hi,
Byronlj has it right.
The green wire to the green screw, white wire to the silver screw, and black wire to both of the brass screws. Then you will have 120 volts to both of the RV's legs in the RV. Same as the factory made pigtails.
But also another question. Why not use the 30 amp cord with your factory made 30 to 50 amp adapter?
If you have a detachable cord, that would explain it. But still, your 50' 30 amp cord should have a 30 amp female on one end to plug in your 50 to 30 amp adapter to.
Fred.
