I know that the right thing to do is to convert over to LEDs. That is in the future. For now though I'm having trouble finding replacements for the little plastic socket bulbs in my MTH cars. I also have some Lionel cars that are set up the same way. When I open the car I'm finding burned out and melted (?) bulbs. I have accessory lights on my layout that have been operating for years off of full 19 volt track power. So there has to be something like that available.
Is there a source someone can point me to? Also are there drop-in LED upgrade kits where you just connect to the pickup wires and go!