Going to see a friend in the morning to pick up a set of speedo clocks with rev meter for the k11, he has 2 ,both with speedo's and both pre facelift ones,ones of which are the plain black back ground and the other which are green..i know the plain black ones will fit and work as normal but would the green ones also be plug and play? or will they need modifying to work as i prefer the green ones..