Just a heads up a bought a Hoppy 7 to 6 adapter and it was wired wrong. They had the charge wire and the brake wire reversed. AS soon as you plugged it in the brakes would engage. Took it apart and reversed the wires and it works fine now.
Just trying to save someone some grief if they purchase one and it does not work. Mine might have been a isolated problem.
Careful on saying there is not two versions of the seven blade connector. The blade is normally wired for RV applications which they are. However, people have wired them like the seven pin horse and utility trailer configuration like found in seven pin round pin.
I went through the same thing once! Drove me nuts because I returned one adapter and the 2nd one did the same thing! THEN i discovered some genius way back one decided we should wire the same connector two different ways.
2000 Ford E450 V10 VAN! 450,000+ miles 2014 ORV really big trailer 2015 Ford Focus ST