Confirm headlights are on

First post. Someone please correct me if I am doing anything wrong. I started by doing a lot of searching and reading. I have that issue with the hid lights going out. My question is how do you know if your lights are on? I rigged a piece of fiber optic cable from the front of the lens to the dash. It's just proof of concept for now with tape. I'm considering drilling a .003 hole into the headlight (maybe with a hot needle), but worried about moisture getting in. What are other options for this?

 

I will do as you suggest and install new bulbs, but after reading all the comments l'm not convinced that will be a long term fix. I only did the drivers side but I will install another fiber optic cable for the other side too. I like knowing that the lights are on.
I have been reading this site about 4 years since I first got my Prius. I love the hack to activate the reversing camera. I did that one to monitor the trailer and I added another switch at the same time to include the back up lights.