4-Pole Trailer Wiring Harness Installation in 2015 Grand Cherokee Without Factory Tow Package


If I use the T-one 118727 for my trailer lights, do I need to have the computer flashed at the dealer once installed?


Expert Reply:

The Tekonsha 4-Pole Vehicle Wiring Harness # 118727 is a confirmed fit on your 2015 Jeep Grand Cherokee without factory tow package. The written instructions are linked along with a helpful article that will aid your installation.

Once you have installed the harness according to the instructions it will not be necessary to have your dealership flash the computer, according to my contact at Tekonsha.

expert reply by:
Adam R

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