The disadvantage of these schemes is the need to constantly flip through pages to find the required intermediate connection.
Construction of electrical circuits
The wiring diagrams are shown schematically.
Electrical diagrams of the Mercedes car
The authors have chosen the most frequently used schemes at their own discretion. Anyone who wants to get a full set of schemes can be advised to contact a company selling Mercedes cars and order a set.
Current supply
The "positive" group is usually shown at the top of the diagram. Current comes here from a fuse, for which the contact designation, number and nominal value are indicated.
Fuses
The letter designation "F" and the subsequent digital designation on the diagram show fuses in their contacts. The numbering corresponds to their placement in the fuse and relay boxes.
Wires
The wires are marked with their cross-sectional designations.
Contact connectors are usually marked on the diagram with the letter "X". The following digital designation allows you to determine from the table where this connection is located in the car.
Details
All parts have a letter and subsequent digital designation on the diagrams. For example, the letter "A" designates devices, receivers, transmitters; "B" - sensors, temperature sensors; "E" - lamps; "F" - fuses; "G" - current sources; "H" - signaling devices; "K" — relay; "L" - coils, inductive sensors; "M" - Electric motors; "N" — control units; "R" — resistors; "S" - switches; "T" - ignition coils; "W — - mass contacts "; "X" - contact connectors; "Y" - valves; "Z" - soldering points in the wire harness.
Symbols
Conventional symbols are used to designate parts, and the position of all switches and contacts is shown for a stationary, closed vehicle with the parking brake applied.
Contact designations. Similar to those shown on the diagrams, one- or two-digit digital designations on the diagram, with additional letters if necessary, can be found on the connection contacts of the corresponding parts.
Weight
The body, engine and gearbox parts in electrical equipment serve to close the electrical circuit and are called "ground". In the diagrams, each "ground" contact is designated by the letter "W".
Differences between modifications
The diagrams also show the differences depending on the modification and configuration. The parts are enclosed in a dotted frame and designated by the abbreviation (see list of abbreviations). The wiring is not shown in full. If you have found the configuration option for your car, you need to move it under the symbol of the interrupted wiring according to the image and establish the connection this way.