I agree with the switch location. You should, if you haven't already, join the Hi-Lo Trailer Forum:
Hi-Lo Forum There are nearly 11,000 friendly members there ready to help you with your Hi-Lo questions.
Rich and Joyce
2018 Jayco Jay Flight 21QB
2012 Ford F150 4X4 Supercrew EcoBoost
Reese Strait-Line Dual Cam Hitch
Amateur Radio K3EXU