TJ Trailer Wiring Harness - JeepForum Feb 19, 2005TJ Trailer Wiring Harness I talked to my dealer about getting a 4-pin flat connector installed yesterday. The price for the part is $39 and their book says it should take 4/10 of an hour to install. dealer claims it's more like 1 1/2 hours, which comes out to be $117 in labor alone.Author: 4xphate2018 trailer wiring harness NOT availableOct 23, 20187 way trailer plug wiringJul 21, 2015TJ trailer wiring harness questionNov 15, 2007Trailer wiring harness installation?Apr 26, 2004See more results Jeep TJ Trailer Wiring | etrailer Guaranteed fit Jeep TJ Trailer Wiring. Lowest price guaranteed. Thousands of customer trailer wiring reviews, expert tips and recommendation. Lowest price guaranteed, easy online ordering at etrailer.com or call 800-298-8924.