Series 55 – Section 8 Electrical Equipment Section 8 Electrical Equipment 8.1 Overview of Electrical System 8.2 Battery Charging Alternator 8.3 Storage Battery 8.4 Cranking Motor 8.5 DDEC III Wiring Harness 8.6 Metri-Pack 150 Series Connectors 8.7 Micro-Pack Series Connectors 8.8 Weather Pack and Metri-Pack 280 Series Connectors 8.9 Connector Tools 8.10 Splicing Guidelines