Hello so recently I have been wanting to install one of these nest thermostats into my home and realized I didn't have a C wire and it was recommended to install a google nest power connector, the installation seemed simple so I got one when I opened my furnace I had trouble finding the circuit board. So I was wondering if someone can help me locate it or if there just isn't one in my furnace because I've heard the older ones tend not to have one. I took these photos to see if it can help but if more photos are needed please ask and I'll be happy to provide them.
This is a picture of the top, sorry if it's blurry but its basically instructions on what to do if it needs to be removed or worked on. When I took this photo I was wondering If it could be on top because it looked like it can be removed but didn't try it because I didn't want to mess with it
This is a photo of the inside of the bottom like I said before I couldn't find it anywhere so I don't know if this helps but I can take other photos if needed.