I assume it's still going through the relay coil... It doesn't seem to draw enough to close the relay and honk the horn, so whatever.As stated, the cover pops off and the big nut loosens the wheel. There is usually a terminal to unplug. Personally, I'd put the phone on the dash, but it's your ride.
I think I still have a blue one around if you want it. PM me and we can see if it works out for the both of us.