I was fixing the door panel on the driver's side and notice that the interior door light did not come one (H2 2003). Replaced bulb, but still nothing comes on. I open all the other doors and all the lights come on. Need help troubleshooting. If there is a youtube video, then please let me know the keywords or the link. I can't find anything to troubleshoot or know what to do to fix it. It may be coincidental but the seat belt warning light doesn't come one either. (H2 2003) Trying to learn so any input is appreciated.
Is there a trick to test the socket itself?

PS. Broke a few clips but I cant find the correct size replacements. Links or stores to locate?

Thanks