4-Pole Trailer Wiring Harness for 2003 Toyota Tacoma
Updated 06/01/2017 | Published 05/31/2017
Question:
Looking to hook up my trailer lights to my truck. Not sure what part I need. Have a 2003 tacoma that has a cap over the bed. The cap brake light is hooked up at the left tail light and I am not sure how to run a connection for the trailer. The connection is already spliced for the brake light on the cap. I want to make sure the light on the cap works along with the trailer lights too. Thanks.
asked by: Greg
Helpful Expert Reply:
We offer a custom-fit 4-pole wiring harness from Tekonsha that fits your 2003 Toyota Tacoma. Part # 118379 installs easily with plug-in connectors that install at your tail light wiring and one single ground wire that gets attached to the vehicle sheet metal, as shown in the linked video. Since this harness connects between your taillights and their wiring it should not affect your existing spliced connection, but if you wish you can use the red wire for a brake light signal for the 3rd brake light.
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