4-Way Round Trailer Connection Much Smaller Than What I Can Find

Updated 05/20/2021 | Published 05/18/2021

Products Featured in This Question

Adapter 4 Round to 4 Flat

(82)

$11.94

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

(135)

$10.80

Question:

Hello - I am trying to wire a harness from truck to 1992 boat trailer. The trailer has a 4 pole ROUND male end. The pole pins however are much larger than the female holes found on any part that I have looked into online or at auto stores. Does the 47465 have the larger holes or smaller ones? Also, is there a standardinch term that defines the small vs larger holes or pins? Super confusing and frustrating! Thank you

asked by: Chris H

Expert Reply:

I have never seen a connection like that for a 4-way. Regardless of the pin size the slot is internal to the plug on the connection point instead of external as on current 4-Pole Round Connector # PK11404.

I recommend replacing the connection with a standard size round connector # PK11404 or converting to the more common 4-flat # HM48190.

The Adapter 4 Round to 4 Flat # will use the standard 4 round size connector.

expert reply by: Bud M