Discussion about the M119 engine V-8 engine, accessories and other mechanical bits.
Discussion about the 500E / E500 drivetrain and accessories, including rear-end and gearing.
Discussion about the steering, brakes and damping systems, including the rear hydropneumatic suspension.
Rolling stock.
Discussion about the interior heating, ventilation and cooling (HVAC) system -- including automatic & manual systems.
Discussion about the 500E / E500 electrical system & accessories, as well as the Control Area Network (CAN) computer control system.
Discussion about how to solve "brain-stumper" issues that crop up.