Need help !!! Lights in centre dash cluster of my 1988 5th too dim so in process of changing bulbs to #2825 5W..... have changed the bulb behind the gas gauge and the one for the gear shifter selection no problem. (Amazing difference !!!) How the hell do I access the bulb behind the speedometer gauge ??? Do I really have to disconnect the speedo cable to access ? Some members gave changed dash lights to led so hopefully someone can give me some direction. Any and all advice much appreciated.