Toad vehicle battery charge maintainer--Blue Ox answers which connector is "Aux"

[CW5AVRet]

Got Blue Ox tow package w/Patriot 3 remote brake unit. Did not get anything to maintain toad vehicle battery charge while under tow. Result: after 3 hour drive home, dead car battery. That really sucked on a 100+ day so today I put in a Hopkins battery charge maintainer unit. Just want to help anyone else with this project, especially if you're doing it on a weekend when Blue Ox is closed. Big question was, which connector on the toad vehicle female plug is "Aux" to connect the red power wire to. Answer from Leslie at Blue Ox: it's the connector marked "S" at the 2o'clock position as you're looking at the plug from the back (wire) side. Another helpful hint: the connection is not really big enough to accommodate the new wire along with the wire that's already there. You'll have to do some twisting & crimping to squeeze the two wires together enough to fit in the hole with the set screw. Hope this helps & good luck!