I am not certain about the 150 but I bet the Mc logo bulbs are solder-type and the rest are plug-in. It is an easy job if you have ever used a soldering iron before.
Be sure to order a new set from Mc before doing anything. Chances are not all of the bulbs are the same wattage and can be hard to find so don't expect to run to Radio Shack to get some at the last minute.
Be sure to order a new set from Mc before doing anything. Chances are not all of the bulbs are the same wattage and can be hard to find so don't expect to run to Radio Shack to get some at the last minute.