Junction Box Cable Connector Waterproof Cable Connector Junction Box Waterproof Electrical Connector Box 2-6 Way 22-10 AWG 32A for Ø4-9mm Cable (Easy to Install) - Amazon.com
Amazon.com: Cable Matters 7-Way Trailer Wire Harness 6ft with Junction Box for Trailer in Black - Inline Trailer Cord with 7-Gang Junction Box and 6 Feet Trailer Plug : Automotive
MaxxHaul Harness Junction Box for 7/6-Way Trailer Wire Connectors 80763 - The Home Depot