Kent will specifically address the problems with the W123 and W126 blower motors, and discuss the options you will have to fix them. Principles will apply to other chassis as well. As a bonus you will get to see how he tests operation with a 12 volt power supply.Link to all brush repair kits: mercedessource.com/store/sear... Link to replacement blower motors: mercedessource.com/store/sear...