5-Flat Trailer End Connector, 4' Wishbone Harness, 4' Ground, 4' Auxiliary | West Marine
Amazon.com: CARROFIX Trailer Wire Extension - 4 Way to 5 Way Flat Harness - Universal Adapter Connector 4 Pin to 5 Pin for Connecting Signal Lights from Truck to Boat Trailer and
Amazon.com: True Mods 4 Pin Flat Trailer Light Wiring Harness Kit [Wishbone-Style] [SAE J1128 Rated] [25' Male & 4' Female] [18 AWG Color Coded Wires] 4 Way Flat 5 Wire Harness for
Your Guide to 4-Pin Trailer Connectors | Car and Driver
CURT Custom Vehicle-Trailer Wiring Harness, 4-Way Flat Output, Select Mazda CX-5, Quick Electrical Wire T-Connector 56310 - The Home Depot
4-Way Trunk Side Trailer Wire Connector - T-H Marine Supplies
Powered Standard Duty 5 Wire to 4 Wire System Boat Trailer Light Converter - White's Marine
Amazon.com: United Pacific 90620 Trailer Light Converter for Trailers, 5- Wire System to 4-Wire System, 18G Bonded Wire w/Flat 4-Way Female Connector - ONE Unit : Automotive