Proton Wira Wiring Diagram -

Ground: Each headlight bulb has a Black wire that bolts to the chassis near the radiator support.

Upgrade Note: Many Wira owners install a relay harness to fix dim lights. The stock wiring diagram shows that headlight power passes directly through the ignition switch, causing voltage drop. A relay harness pulls power directly from the battery.

The Proton Wira (also sold as Mitsubishi Lancer-derived platform) electrical system is conventional: 12V negative-earth, fused circuits for ignition, lighting, accessories, charging, starter and engine management. Common wiring subsystems: battery/charging, starter/ignition, engine sensors/actuators (ECU), fuel/pump, lighting (front/rear/indicators), instrument cluster, HVAC, central locking/alarms, and optional ABS. proton wira wiring diagram

The most common issue in old Wiras is "crank no start" or "slow crank." Ground: Each headlight bulb has a Black wire

The engine wiring is the most complex part of the Wira. Below is a breakdown of key circuits. Upgrade Note: Many Wira owners install a relay