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4-way to 5-way Adapter Recommendation to Tow Trailer with Reverse Lock Out Solenoid  

Question:

I have a 2009 Lexus LX 570 and a boat trailer. The boat trailer has a brake cable for the solenoid which is for reverse lockout that my Lexus does not have. Do you have an adapter for this? Thank you,

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Expert Reply:

Sounds like your 2009 Lexus LX 570 has a 4-way trailer wiring harness and your trailer uses a 5-way that activates the reverse lock out solenoid of the trailer.

The correct adapter you would need is the part # 20036. This will convert your 4-way to a 5-way and would work well for you.

Typically the fifth wire is for a reverse lockout or light so it would get run to the reverse light circuit of your vehicle. I attached an install video that shows a typical install of this adapter.

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Jameson C

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