AutoCom - Intercom systems. Robert Bosch GmbH - Winding bends, steep slopes and wet roads mean tough tests for technology. Diode Boards - Redisigned - This is a totally redesigned diode board for all aircooled Boxer twins with alternators. It is designed with reliability in mind and costs less than the original part. Electrical Connection - Offering an assortment of accessories. Motorrad Elektrik - Offers electrical parts for classic and modern BMWs for over 8 years. Cockpit Mounts - Saeng - Solution for any light instrument. Battery Tech - This article is meant to center on the technical aspects of motorcycle batteries. Motorcycle references are generally to BMWs. Electrical systems are only discussed as needed. Others can give you far better info on the tech details of specific bikes.