The original electrical converter on our PC2100, a Magnatex 6332, was based on an analog design. As it accumulates time and use, the unit is known for over-charging the RV's 12v battery. I replaced this with a Progressive Dynamics PD4635 unit. Also replaced the stock 12v fuse block with an updated one which, if a fuse is tripped, will display an red LED light Located directly below the blown fuse. The upgraded converter maintains a better battery charging cycle, as well as preventing an over-charge. Along with added protection for 12v electrical devices operating in the RV. The swap took several hours, most of it being the time it took to wire a jumper onto the positive cable. The original one being too short to reach the contact on the new converter.