This is a Dual Function tail light wiring schematic that will allow the same Toter to easily pull an RV or Commercial Trailer that's wired per ASME/ATA wiring standards with the simple un-plug and re-plug of the appropriate ASME/ATA commercial plug in the Toter's electrical compartment. - - - This requires very little additional work or expense when re-wiring your Toter to pull your 5th_Wheel therefore in IMPO it makes No Sense to own a truck the size of an HDT and limiting yourself to only being able to tow a 5th_Wheel ot travel trailer once your conversion is completed. - - - Remember, there may come a time down the road when you'll need to haul a ASME/ATA commercially wired trailer with your's or family members personal belongings......