Why it is not getting power on?
Power connected through wire harness but doesn't display anything ... Please mention problem and it's solution
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Check that both constant power (usually a yellow wire) and switched power (usually a red wire) have 12V. Most radios won't work if one of the power leads doesn't have power. Then check the fuse at the back of the radio. Even if the fuse looks okay, swap it with a good fuse to see if that solves the problem. And of course double-check ground connections. Once you confirm power to both leads and a good working fuse, try resetting the head unit using the procedure listed in the owner's manual. Some radios have a tiny reset button of the faceplate or rear of the radio.
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Hold your nose close to the radio; if there's a smell, the radio is burned out. Check the radio's safety fuse.
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