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Comparision of Wiring Harness 33425 and 118413 for a 2002 Toyota Highlander

Question:

What is the difference between these two wiring harnesses? It is for a 2002 toyota highlander non-hybrid. It appears that item 33425, which is more expensive, has an additional connection from the battery to a power supply. Does this provide extra protection in the case of a short in the trailer? Does this allow use with trailers with additional lighting? Thank you.

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Expert Reply:

You basically answered your own question. The more expensive 33425 wiring harness has circuit protection and is powered so that you can tow trailers with more lighting. You will need to run a wire to the battery from the converter box to use this connector.

The 118413 will work fine if you are towing trailers with just one set of lights at the back and no extra lighting. However, it will not protect the vehicle and converter from shorts at the trailer.

Both kits come with instructions and everything needed to wire your vehicle for the 4 pole flat trailer connector.

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