Freightliner Business Class M2 Fuse Box Diagram Freightliner Business Class M2 Fuse Box Diagram. The main fuse box, also known as the power distribution module, or PDM, is located under the hood onthe left front fender just forward of the bulkhead module. The fuses in the main fuse box are mini blade-type fuses. Battery power fuses, located near the batteries, are bolt-in megafuses. Freightliner M2 Fuse Box Location | Fuse Box And Wiring Description : Freightliner Fuse Box Location. Freightliner. Wiring Diagram in Freightliner M2 Fuse Box Location, image size 975 X 731 px, and to view image details please click the image. Published by means of admin with September, 1 2013.