Chasing electrical gremlins on a Great Wall ute or SUV? Start with the basics before blaming the ECU—these rigs can be fussy about power and earths, especially after a hard life on corrugations or through a few creek crossings.
A methodical check will save you hours of swearing and half a toolbox of blown fuses.
Work one circuit at a time, clean grounds, reseat connectors with dielectric grease, and if it’s still misbehaving, an auto sparky with wiring diagrams will have it sorted before your coffee cools.

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