• E10 POWER SUPPLY AND EARTHS
• E20 EXTERIOR LIGHTING
• E25 INTERIOR LIGHTING
• E30 ELECTRICALLY ACTIVATED DEVICES
• E35 RADIO ACCESSORIES
• E40 INSTRUMENT PANEL
• E50 ENGINE CONTROL AND MANAGEMENT SYSTEMS
• E60 CLIMATE CONTROL SYSTEM
• E70 VEHICLE ELECTRONIC SYSTEMS
• E80 DIAGNOSTIC SYSTEMS