ROC Rank: Sophomore
Join Date: Oct 2012
Location: The "Real" Jersey Shore
Model Year: 2008
Color: Billet Silver Metallic
If I'm understanding you went from a 5 pin on your old RL to a 4 pin on the new RL. The 5 pin had one extra wire (purple) for the backup lights. There is a harness that does a simple plug connection into and existing harness, that gives you full 7 pin connections for ebrakes and accessory connections (good for charging a camper battery). There are adapters for all sorts of connections but putting an adapter allows you to use you're old trailer, minus backup lights.
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