96 Blazer Headlights flicker / water leak under dash

I have a 1996 chevy blazer 2 door with the spare tire in the trunk. I have 2 problems and i think they might have something to do with each other. First my day time running lights don't turn on anymore and my dash light for them isn't on anymore. When i turn my lights on, they flicker, relay clicks fast, and voltage drops. My high beams work fine though. The only way i can drive at night is to put my headlights on, turn my highbeams on, then turn my headlights back off but keep my headlights on. This gives me one headlight on normal, and the left one is about half on. the second problem is i have a water leak under my passenger side dash. when i wash my car or it is raining, i will get a leak. I have cleaned out the drains under my hood where the windshield meets the glass and so far it seems to have fixed the problem but i am not sure. It also looks like there is alot of wiring under there so i thought maybe the water got onto the wiring and that is why i now have a headlight problem.