Does anyone know what wire pin (size/style or part number) is used that plugs into the rear junction box for powering the trailer harness? I am not using the OEM harness, which comes with the pin as seen in these OEM instructions. I really want to use that free circuit to power my harness, by crimping on a pin that fits into the open slot.

https://sep.yimg.com/ty/cdn/yhst-248...?t=1548970463&