Speedometer bounces when using turn signal

I've noticed whenever I'm accelerating and I turn on my turn signal, the speedometer needle drops all the way to zero before bouncing back to the current speed. And on random occasions, the speedometer won't work at all for the first 10 minutes of the drive. I'm not sure whats going on, but I was hoping to get some better insight before it causes bigger issues.

 

I have the same dip in my speedometer only on left turns. I also have issues with my brights coming on and I am researching bad switch and possible relay problems as well as headlight issues. I will keep looking and post what I find.