Interpreting Wiring Diagrams. Splices are represented by the letter z and connectors by the letter x in the case of a splice you will see a wire passing through a diamond with a designation such as z3. Wiring diagrams it is the job of a draftsperson to create the schematic so that it is electrically correct.
A car wiring diagram is a map. A 4 how to read the wiring diagrams how to read circuit diagrams how to read circuit diagrams the circuit of each system from fuse or fusible link to earth is shown. It shows how the electrical wires are interconnected and can also show where fixtures and components may be connected to the system.
Line junction a line represents a wire.
Junctions and nodes wires can connect two terminals together or they can connect dozens. Highlight the individual circuit using a different color for positive and negative. When three or more lines touch each other or cross each other and a node is placed at the intersection this represents the lines or wires being electrically connected at that point. Eliminate each portion of the diagram in sections until you find the short in the wiring.