Mercedes W124

since 1985-1995 of release

Repair and car operation



W124 Mercedes
+ Governing bodies and control devices
+ MAINTENANCE
+ 2. Maintenance (diesel engines)
+ ENGINE
+ 4. Repair of 6-cylinder petrol SOHC engines
+ 5. Repair of 6-cylinder petrol DOHC engines
+ 6. Repair of the diesel engine established in the car
+ 7. Major maintenance of engines
+ COOLING SYSTEM
+ FUEL SYSTEM
+ 10. System of injection of BOSCH CIS-E fuel (KE-JETRONIC)
+ 11. System of injection of BOSCH HFM fuel
+ 12. Fuel system of diesel engines
+ 13. Fuel system of diesel engines
+ SYSTEMS OF START, IGNITION
+ 15. System of ignition of 4-cylinder petrol engines
+ 16. System of ignition of four-cylinder petrol engines
+ PRESTARTING HEATING
+ TRANSMISSION
+ 19. Mechanical transmission
+ 20. Automatic transmission
+ POWER SHAFTS
+ BRAKE SYSTEM
+ SUSPENSION BRACKET
+ BODY
- ELECTRIC EQUIPMENT
   25.2. General information
   25.3. Electric chains
   25.4. Detection of a faulty electric chain
   25.5. Safety locks and relay
   + 25.6. Switches
   + 25.7. Bulbs of external lighting
   + 25.8. Bulbs of internal lighting
   25.9. Devices of external lighting
   25.10. Adjustment of light of headlights
   25.11. Combination of devices
   25.12. Elements of a combination of devices
   25.13. Cable of a drive of a speedometer
   25.14. Lighter illumination
   25.15. Sound signal
   25.16. Screen wiper lever
   25.17. Screen wiper drive
   25.18. Screen wiper of a back door
   25.19. Elements of system of a washer of a windscreen and headlights
   + 25.20. Sound-reproducing equipment
   25.21. Loudspeakers
   25.22. System elements cruise control
   25.23. Safety cushion
   25.24. Safety cushion elements
   + 25.25. Electric circuits
+ CHECK OF MALFUNCTIONS






25.2. General information

GENERAL INFORMATION

Consumers incorporate to the positive power supply a wire, and with minus - through a car body (weight). Such method allows to reduce number of wires and to simplify installation.

The electric system has a dvenadtsativoltovy food with negative grounding and consists of the accumulator, the generator, a starter, consumers of the electric power and electric chains.

Service and repair of the various electric elements which have not been connected with the engine is given in this chapter.

For protection of electric chains the safety locks which color corresponds to a current of protection of a safety lock are used. Serviceability of a safety lock is determined by presence of the wire conductor connecting contacts of a safety lock.

At work with the electric equipment remove a weight wire from the accumulator to prevent possibility of short circuit of electric chains.