Recommended 4-Way Flat To 6-Way Square Adapter  

I installed the 56166 vehicle to trailer wiring harness in my 2017 Toyota RAV4. I now have a small tent trailer with a 6 prong square plug. The trailer dates back to 2001 and has regular bulbs and a separate wire for brake lights. Is there a four prong to 6 prong square adapter that will convert the brake light signal to the red wire on the trailer? It is the same connection as a jayco from the looks of it.

asked by: Brad S