Note 3 issue

So recently my charging port has been acting strange so I had to charge it using a cable with only the positive and negative connecting it straight to the two clips on the back theyre the spot you use to wireless charge But all of the sudden the camera flash is on like a flash light and whenever I charge it it gets way brighter. The flash will stay on when I shut the phone down completely and the flash will turn back on as soon as the battery is plugged back in. I just need it to look like nothing is wrong when I trade it in on friday so should I try disconnecting the flash light or what? I really need help cause I also need it for use this week.