Sounds like a few things going on....
1. Turn signals make my oil pressure needle flutter back and forth with the clicking.
Sounds like a bad ground somewhere...that may take a bit of searching for the source...did you do any work recently like installing a radio, splicing wires, patching in wires to the fuse panel?
If so and this started happening just after...backtrack and check your work...otherwise check your grounds for corrosion...battery cables...loose connections on the battery or the solenoid on the fender where your battery connects to the starter circuit...tighten, clean, replace damaged wires.
2. My Drivers headlight is dim as mess, like super yellow, while my passenger side is good. I also have zero high beam in the drivers side.
High beams may be the bulb needs to be replaced...if the low beams work...and the dimming may indicate the bulb also...it is just about ready to go out...simple to replace them...go to a junkyard and grab some spares...they don't usually charge for them or very low price...I always grabbed spares when going in for other things...
Otherwise could be another wire/socket issue...if replacing the bulb doesn't fix it check the wires...back to any connections in the harness...maybe a bare wire that is shorting out...
3. My headlights are so out of alignment that they don’t help me at all when driving. How can I adjust the angle?
There are adjustment screws that you can use to align them...they are on the side and bottom of the lens on each side...star screw driver will adjust...spray the adjusters with some penetrating oil before doing anything...if they are too badly rusted you may need to do a bit of cleaning...if they look clean check the alignment before doing anything.
I used to drive up to a wall or garage door (nonreflective) and park about 5 feet away...best done at night...see where they are aimed...if you can't tell that then you may need to check with a mechanic but they are not hard to adjust or determine their aim.
If you can, adjust them so they were slightly off to the right towards passenger side and the beam was pointing level with the hood or slightly downwards...you don't want to blind the traffic coming at you and don't want them too high or too low...you can see approx where they are pointed on the wall by the way they focus...
EDIT: If your lenses are dirty you can clean them...check this thread for tips on cleaning...
http://www.therangerstation.com/forums/showthread.php?t=174782
I used the method of wet sanding and clear coat spray but there are others that work just as well..
Not a lot to fix but certainly can be frustrating when they all happen at once or the show up around the same time...but you get used to it...and it's fun to be on top of it.