Would a speedometer from a 2013 Road King work with my 07 Road King? I believe I heard someone say 2014 and up is when things changed.

 

don't think so. when i replaced the speedo on the wife's 2012, the new one had to come pre-set with the mileage and after 30 miles married to the ecm.

 

So.if I bought the new one from Harley they have to do something with it ?

 

they don't 'have' to, but you tell them what mileage to pre-set it at when you order it so that it reads correctly. i know that the newer (not sure what years here) bikes also store the mileage in the ecm, so i don't know if you have to have them agree or not. i do know that we had the wife's mileage set a little ahead of where she was when we ordered it and then she rode for a little bit until it hit that mileage, then we switched.