dash help!

I have an annoying problem. My left turn signal indicator on the dash (every thing outside works great) isn't working. It worked fine until the other day when I replaced the wiper pivot seals. I didn't notice it wasn't working until a couple days ago. I replaced the seals 2 weeks ago. I also have the left side of my dash lamps out. The right side lights up, left no. That has been going on for a while. I took a picture and I noticed that the printed circuit board has a spot on it, think this might be my problem?
I also have a connector hanging lose, I think it is for the EGR service light, that I don't have, so it's just a dud.
Any Ideas will be welcome! I know it's petty, but I would like it fixed.
also, there is a yellow electric device in the first picture, it is partially blocked, any idea what that is? it was unplugged, I plugged it back and hoped nothing would explode. so far nothing good or bad has happened.

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