REAR WINDOW DEFOGGER — Wiring Diagram
EL-74wiring diagramWiring Diagram
Rear window defogger wiring
Components (15)
BatteryIgnition switch (ON or START)Fuse block (10 A coil + 20 A heater feed)Rear window defogger relayRear window defogger switch (OFF / ON, with illuminator)Condenser (RFI suppression)Rear window defogger heating element (printed grid)Body grounds (M57 / M116 / M117)fuse block (20 A)rear defogger relay contact +rear defogger relay outputrear defogger element via M135/D501 + condenserrear defogger sw (pos 3)rear defogger relay coil −rear defogger element (−)
Connections (4)
fuse block (20 A)
fuse block (20 A)rear defogger relay contact +
rear defogger relay output
rear defogger relay outputrear defogger element via M135/D501 + condenserBlue with Red stripe
rear defogger sw (pos 3)
rear defogger sw (pos 3)rear defogger relay coil −
rear defogger element (−)
rear defogger element (−)Body grounds (M57 / M116 / M117)Black