I think mine is also small like the one on the bottom. It's very easy to pop off the mirror and check that the plug has all the right wires.
2009 E92 335i M-Sport TiAg|Black|Aluminum -ZMP|ZPP|NAV|CA|Heated Seats|6MT
BMW Performance Exhaust|Rear Fogs|OEM Black Grills|Cobb AP|ETS 5" FMIC|DCI
Installer for BimmerTech