Thanks for all your help. It was exactly the neutral safety switch, the plastic was literally broken. As soon as I replaced it, the issue is gone. Thanks again for all your help.
The reverse lights on my 2008 Mazda3 Hatchback stopped working. I looked online, some people said it might the Backup light switch but my car is automatic and it doesn't have it. Someone on the forum also said the problem is probably in the reverse sensor in the transmission that detects when...