Recommended 4-Way Trailer Connector for a Boat Trailer

Updated 09/12/2025 | Published 05/28/2025

Products Featured in This Question

2-Speed Boat Trailer Winch with 20' Strap and Brake - 3,200 lbs

(322)

$164.22

Pollak Heavy-Duty, 4-Pole, Round Pin Trailer Wiring Connector - Metal - Trailer End

(117)

$10.25

Question:

Hello, I was hoping you could help me. I have a boat trailer and the pigtail has the very small trailer wire in it, all the big tails have larger wire. The connector has 4 prongs and is round and plugs into my truck. Can you recommend a pigtail with the small wire? The wire in pigtail is same size as standard trailer wire lights , very small. Thank you

asked by: Greg P

Expert Reply:

Hey Greg. I have two different types of 4-way connectors that take smaller wire. I have listed them below:

4-Pole Round - Pollak Heavy-Duty, 4-Pole, Round Pin Trailer Wiring Connector item # PK11402 - We do not have one with a pigtail but this connector accepts up to 12 gauge wire.

4-Flat - Hopkins Endurance 4-Way Flat Trailer Connector item # HM48110 - This connector has 16 gauge wire for the ground and 18 gauge for the other functions.

What gauge wire is on your boat's connector? It typically says it somewhere on the sheathing. You can add this information and any other questions you have in the box below that says Reply to Jerred H.

expert reply by: Jerred H

Jerred H.

9/12/2025

Hey Greg, did you have a chance to check the gauge of the wire on your boat's connector? I'm here to help if you need more assistance with finding the right pigtail.

Greg P.

9/12/2025

@JerredH Sorry I am not sure but It's the same wire that's in this kit- Part Number: TL5RK. I appreciate you sending me this

Jerred H.

9/12/2025

@GregP The Optronics light kit item # TL5RK has 18 gauge wires. You would want the 4-Flat - Hopkins Endurance 4-Way Flat Trailer Connector item # HM48110. This connector has 16 gauge wire for the ground and 18 gauge for the other functions.