Heaviest Gauge Wire 4-Way Trailer Connector
Updated 01/19/2026 | Published 08/13/2024
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Question:
Looking for 4 wire for boat trailer. Looking for option on size of wire. Would like bigger wire if possible. Something bigger than 18 or 16. Do they make any heavier wired for a 4 flat plug harness. Thank you
asked by: Dan H
Expert Reply:
Yes, they do! Our heaviest gauge 4-way connector is the Wesbar item # W787274 which uses 14 gauge wire. This wiring harness is 14' long. You can use the Deka Jacketed 4-Wire item # DW04923-1, which is sold by the foot if you need any additional length. You will want to use the Deka Heat Shrink Butt Connector item # DW05744-10 to insure a water tight connection.
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Hopkins Trailer Wiring Installation Kit
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Jerred H.
1/19/2026
Hey, how did the 14-gauge wiring work out for your boat trailer? That heavier wire should give you a more solid connection. Sharing how it turned out could help others looking for the same upgrade.