Reverse Camera installation - Unexplained light becoming out of control.

I have install the reverse camera on a nissan march AK13 2013 as per below
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However, when i put the earth wire in the same as the left rear light circuit, the direction indicator light goes out of control and the car headlight adjustment (0-3) becomes out of control. When i put the earth cable on the car structure itself, the only issue is the left direction indicator lights which becomes the hazard indicator lights.

Please i need help as the cable connection seems fine, is there a specific way to install the reverse camera on a nissan march K13?
 

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