I do have an option for you but there is not going to be an entirely plug and play 4 to 7-way adapter for your 2008 Four Winds 5000 Motorhome on a Ford E-450 Cutaway Chassis. In order to install a 7-way you will need the 7-Way RV and 4-Way Flat Adapter part # ETBC7. This adapter will plug into the 4-way you have now but you will need to run the brake output wire from this to the back of your brake controller and ground the adapter at the very least. In order to reach the back of the brake... view full answer...
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