I currently own a 2002 Legacy GT limited and was using replacing my interior lights (dash, cigarette, HVAC, and key ring) when I ran into a problem. While replacing the key ring I couldn't get the new led to fit and in the attempt to make it fit I crossed the connectors on the plug. After solving the problem I became aware (post light installation) that my dome light dims when I open the door, and when it shuts the light would remain on when set to neutral (not power always on). After opening and closing the door multiple times I decided to test my door locks and the toggle switch on both the passenger and driver sides didn't respond. This was the case for my remote. I again disconnected the battery and the doors would work again. but when I switched the dome light on the same issue would occur.
Finally I decided to remove the dome light bulb, and repeated the procedure and the locks are fully functional. I should also note that the key ring light isn't acting normal either but it being on hasn't negatively effected the power locks.
It is all managable but I would like to be able to have a functioning dome light and power locks. Any suggestions on how to diagnose and fix this issue would be greatly appreciated. Pictures are also immensely helpful since I'm not really good with electronics.