When Kuala Lumpur exhausted its three-letter/four number series in September 2013, with WYY 9999, a new series began with W 9999 A, in which the suffix A would alphabetically proceed to B, C etc., as far as W 9999 Y. (Z will be excluded in case of confusion with the military, which always uses Z.) Other suffix exclusions are I, J and O – oddly, suffix Q is used even though it is associated as an identifier for Malaysian Sarawak. By mid March 2014, the letters in suffix are almost used up! T is the latest seen but we believe there are some U’s and V’s out there…. (now confirmed March 30, 2014). We know W suffix starts in May or June. Then X and Y will complete this cycle and the next batch will be WA 1234 A-Y, then WB etc.
An interesting sighting related to the Motor Dealer category of the Malaysian system, has been this towing-plate, properly constructed and possibly an authorised type, though the first ever seen and photographed.