CURT 58911 Custom Towed Vehicle RV Wiring Harness for Dinghy Towing Select Fiat 500 2 1 2" Shank 6" Rapid Hitch Fits select Chevy GMC Size:5 on 4.5" Fits select Chevy GMC long bed trucks with puck system (year range specific) Cast yoke with poly torsion inserts to suppress shock loads and reduce noise Fully articulating torsion head for controlled coupling and stable towing Lockable handle self resets to the ready to couple position after uncoupling Constructed with a cast steel main body for a more precise build High strength This particular class 2 hitch is made to be a custom hitch for certain years of the Mercedes Benz CLA250 (to verify vehicle compatibility This particular RV dinghy towing wiring harness is designed for specific years of the Fiat 500 They isolate the sensitive vehicle electronics