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Hello, I need a monitor from China for Mercedes Viano 2010, what monitor do you think is the best monitor? Please help

I managed to fix my left side repeater on the wingmirror, I originally thought was the cause but it seems not. All repeaters/bulbs etc in the whole car now work fine, I've changed the ones that were wrong. Although the dash still comes up as defective light. There seems to be no obvious...