You need to connect the constant power wire which is yellow to the battery wire from your radio harness. If you're not using a radio harness the use a 12v tester to find the battery power, this line would have power even when the car is switched off.Follow this link to get a better view of my comment.
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Make sure the wire connection for battery is correct.
You need to connect the constant power wire which is yellow to the battery wire from your radio harness. If you're not using a radio harness the use a 12v tester to find the battery power, this line would have power even when the car is switched off.Follow this link to get a better view of my comment.