I was torn between the Between a a hardwired unit and the external suppressor. I went with the external TRC 30A, because if there is an issue with the electrical at the pedestal then everything is protected, including the cable between the pedestal and the trailer. It was my personal preference for location, and others may have differing opinions with regards to that precaution. And, I went with TRC due to features like the LED display, the reverse polarity indicator, and the delay before power up. I bought the plastic case with a lock, just as added precaution to keep the honest people honest.
2012 Dodge Ram Hemi 3.55
2012 Jayco Jay Flight 26BH
Reese Pro Series WDH w/ sway control 1000#