surge brakes are pretty rare anymore and are generally only on smaller utility trailers and popups.
surge brakes don't require a B.C.
Prodigy is the best selling and recommended B.C. on the market.
i have a question. your pic shows a truck and trailer.
have you been towing your trailer without a brake controller?
and Zoe the Wonder Dog(R.I.P.)
'07 Roo 23SS pushing an '07 Chevy Avalanche
Equalizer WDH and Prodigy BC