electrical weirdness

So I put new led's in my dash today b/c I thot I had blown bulbs behind the dash because it only looked like two were glowing and parts of my dash weren't illuminated. So I put the led's in and the dash still isn't lit up on certain spots like the fuel gauge and temp gauge. Also at the same time I noticed one of my headlights quit working, but just one low beam. Does this sound like an electrical problem or do I just need a new bulb? And idk whatsup with dash any ideas?

 

some led are polarity sensitive,has for your headlight ,i would troubleshoot it seperately

 

I turned the leds around and still no luck. Should I have disconnected the negative batt cable first? Maybe I shorted two bulbs out in the dash. They worked last night, well partly on the left and now its just dark.