That would be the first thing to check, seeing as the right hand stuff is OK. but you say the dip switch is working.
I have a 2011 model FatBob.
FatRob, have you checked your two main handlebar plugs?
Try replacing your key fob battery - I cannot explain why but I had similar issues with brake/indicators recently, couldn't figure it out after checking everything: replaced the button battery for $5 and it all started working fine :)