Headlight / electrical problem!!! On a 2000 Hyundai Tiburon.?

My headlights (H7's) for my 2000 Hyundai Tiburon keep going out. I've replaced them 6 times this week so i know it's not a bulb problem. I don't know maybe im putting the connector to the bulb socket in wrong? I put brown wire on the bottom socket and yellow on the top socket. (Haven't tried yellow on bottom and brown on top yet, no more money to buy bulbs [H7's]) All six pairs of bulbs (H7's) came on, but soon after 2-3 minutes they burn out. (The back of the bulb [H7's], have a burn mark) During my third or fourth pair of bulb (H7's) the high-beam bulbs (H1's) or maybe (H4's) i forget, also burned out, and since then on i've been having more electrical problems. Like the light for my Hot and Cold meter on my dashboard goes on and off, and the meter rises saying my car is overheating when it is not. Or when my windshield wipers are on the sound (ding) for my seatbelt removed warning goes off. And my check engine light goes on and off. I Don't know what it is, i've checked the fuses but the gold/copper thing inside is still good (not damaged), because i know when a fuse burns out that gold/copper thing should be broken. right? I will be taking it to a mechanic soon, but i'm just lazy and my computer was closer. Someone Please Help!