Hopkins trailer connector # HM11143910 is designed as a replacement for 2013 Lexus LX 570 models that came with a factory tow package and 7-Way connector. It sounds like yours did not come with the factory tow package or it is not connected in the right place and that would be why it isn't working. If you have it plugged into the connectors on the passenger's side of the vehicle then try plugging the harness into the same connectors on the driver's side. Or it could be that the dealer has... view full answer...
The Hopkins Plug-In Simple Vehicle Wiring Harness for Factory Tow Package - 7-Way and 4-Flat Connectors part # HM11143910 is the only available plug-in seven way trailer wiring harness for a 2011 Lexus LX 570. I checked out some of the review and the few complaints that I saw were that the plugs appeared to be pinned incorrectly. There are two connectors on the drivers side and two connectors on the passenger side. The harness will plug into both sets of connectors but the connectors on... view full answer...
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