Before reading the diagram, you must understand the architecture.
The Proton Wira uses a standard 12V negative ground system. The wiring is divided into several main looms: proton wira wiring diagram
"The horn," I said, checking the diagram. "According to this, the horn circuit runs right past the steering column bracket." Before reading the diagram, you must understand the
: Key components include the alternator, battery, and various relays (e.g., fuel pump, fan, and compressor relays). Standard Wire Color Codes Before reading the diagram