Sigma Wire Conversion Adapters Sigma Wire Conversion (Park) Adapters A variety of adapters to suit any of your connection needs at a campground. Scroll through the various types... of adapters. All are made of very flexible PVC jacketing for ease of use. Part No. Description Cap/Connector Conversion Adapters 134 15F30M Adapter 18" Park Adapter (15A Female... to 30A Male) 139 30F15M 18" Park Adapter (30A Female to 15A Male) 142 30M50F 18" Park Adapter (30A Male to 50A Female) 141 50M30F 18" Park Adapter (50A Male to 30A Female) 162 3015...