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Adding a 4-Way Trailer Connector to a 2011 Toyota Highlander  

Question:

I did purchase the wiring option for the vehicle trailer option . it included the cable to attach to the rear plug in the well . the lights do not work . My toyota dealer says I need a relay and 30 amp fuse in addition . they want to sell me a $220 cable and fuse and relay .. what is wrong with this story??

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Expert Reply:

Dealer parts are often more costly than aftermarket parts but that does seem excessive given the parts they say you need.

It looks like you ordered # 56042. Which is meant as a replacement 4-Way. You will need the harness you referenced # C56217 to make everything fully functional.

It sounds like they are trying to sell you a 7-Way trailer connector. A 30 amp fuse and a relay are items typically associated with a 7-Way trailer connector. If you just need a 4-Way then you would use # C56217.

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Michael H

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