Why is Powered Converter Type Trailer Wiring Harness Needed for 2013 Sorento SX

Question:

So, I see most of the t-connector adapters here plug into the tail light wiring. This is how i hooked up my Hyundai Sonata many years ago... I just picked up a 2013 Kia Sorento SX without the factory wiring harness adapters, I looked and noticed that the kit that fits all the other sorentos dont work on this one... Can you tell me what the difference is that makes the other 2013 Sorento kits not work? Do I need to splice into the wiring harness?

asked by: Brad B

Expert Reply:

All of our 4-pole trailer wiring harness kits for your 2013 Kia Sorento SX V6 without factory tow package are shown on the linked page, such as # C59496. All use a powered converter, which means that rather than simply plugging in to your taillight wiring and using the car's internal wiring to transmit signals for the trailer, these powered converters protect the car's wiring by delivering power for the trailer lights from a separate power connection at the battery. Each kit includes a 12V power wire that connects to the battery; this delivers the actual current used by the trailer lights.

The 2010 Sonata, as an example, can use a non-powered harness, such as the Curt # C56049, because its wiring is heavier and can handle more current. Just the same, for this car powered converter harness are also made, such as Tekonsha # 118557. It is always preferable to use a powered converter harness when one is available as it will isolate any potential shorts in the trailer wiring to keep them from damaging the vehicle electronics.

The kit # C59496 does require splicing for installation.

expert reply by: Adam R