Blowing Fuses on 2009 Kia Sportage Using Tow Ready T-One Wiring Harness # 118401  

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Expert Reply:

As long as the Tow Ready T-One Wiring Harness, part # 118401, is installed correctly on your 2009 Kia Sportage EX V6, which is a simple plug-in connector and ground the white wire installation, and you are getting power to the 4-Way connector, the problem is probably not with the vehicle. To be sure you can disconnect the t-one connectors from the vehicle and check them making sure that there are no bent pins inside the connector causing a short. When you put the connectors back together, make sure that they are fully seated and locked into place at each connection point.

I would check the trailer that you are plugging into to make sure that there are no shorts on the trailer which would cause the fuses to blow. You most likely encountered a trailer with a short that would need to be corrected before any wiring harness would work with that trailer.Look for any obvious breaks or nicks in the wiring and repair as needed. You can then check the entire length of the trailer wiring by periodically testing the wires with a circuit tester like, part # 3808, to locate breaks you cannot see.

Another thing to check on the trailer you are using is the power draw for the lights on the trailer. The # 118401 wiring harness is designed to handle a maximum of 2.1 amps for stop and turn lights and 5 amps for tail lights. Which is sufficient for most trailers.

If the trailer you are using has any extra lighting that would be drawing more power it could be causing the fuses to blow. If this is the case you will then need to use a powered wiring harness, like the # 119178KIT, or the # 119250KIT, depending on the power draw of the trailer. The # 119178KIT wiring harness will require a power wire being run directly to the battery to power the trailer lights and protect your vehicle from damage. The # 119250 is a no splice option that clips onto wires to get the power. I am including links to the installation instructions on the two powered wiring harnesses for you.

expert reply by: Jeff D

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