I still haven't heard from any other owners regarding how they've solved the problem of towing a trailer with brakes (i.e. requiring a 5-pin electrical connector) with the standard "Acura" brand 4-pin electrical connector. It seems to me that my only option is to yank the Acura 4-pin connector out and have a "5 flat" connector installed. The problem is that my local Acura dealer has told me that this "modification" could void the Acura powertrain warranty! When asked how I can buy an Acura 5-flat connector, the dealer told me that none exists. so my choices are: 1) don't tow my boat with my MDX, or 2) convert the 4-pin connector to a 5-pin adapter and risk voiding my powertrain warranty. I can't be the first one to experience this problem. What have you other owners done to resolve this?