Hey I have a 1994 750 gsxr and I believe I have a ground issue. Headlights come one and off and fan is not kicking on. Prior owner has rigged and bypassed a few things. Problem seems to be around black connectors on right side if I pull up on harness things come to life if pushed down headlight goes back out. Plus now fan not kicking in. I'm on my own w this old girl

SOURCE: 1990 geo metro headlight problem

hmmmm sounds like you are on the right track with the ground . with as much current as headlights pull it is possible that the intermittent open you are experiencing has to do with heat coming from an open in the wiring . i believe your best bet would be to locate a wiring diagram for your cars headlight circuit and inspect every wire in that circuit as well as one surrounding for thing like : burn marks , corrosion , places where insulation has worn off or is no longer even there ( :) ) ,and i believe you may find something . also , some cars come with a set of relays specifically for the headlights . these the headlights may be drawing extra current through the relay causing it to switch off (means headlights are bad ) , or the relay itself may have worn out over time (relay (s) may be bad ). i hope this helps you

SOURCE: Dim Headlights/headlight problem

if that is the case i believe your altenator is bad and draining the battery the altenator runs the engine and charges the battery the battery starts the vehicle and runs all the electronics and accessories the regulator is not working and therefore the battery is not getting charged and as the vehicle is running and the lights are on they will get dimmer and dimmer until there is no voltage left in the battery. reploace the altenator and the problem will go away...please rate this

SOURCE: 2006 Kia Optima headlight adjustment

I posted the adjustment directions here.

http://www.fixya.com/cars/t1481698-head_light_adjustment_2004_optima

SOURCE: 2001 Pontiac Grand Prix GT multifunction switch problem?

I had the exact same problem, I changed the "ignition switch" because the contacts inside were burned, this is why you see all those troubles coming in and out at different moments. It costed me 150$ to do it myself, buy the switch on an online reseller, must cheaper than the dealer! Now everything is back to normal on my Grand Prix GT 99 exept that my headlights don't light up automatically when starting the car... I have to check my fuse/relay and switch to make sure everything is ok on that side.

Good luck.

SOURCE: 1998 Ford Mustang Headlight Adjustment

The adjustment screws/nuts should be located either on the top of the headlamp assembly, behind the headlamp assembly, or near the frame rail by the radiator support.

You will have vertical adjustment screws for each independent beam (separate highs and separate lows, but will be same screw if highs and lows are the same bulb). You may also have additional horizontal adjustment screws as well

Park your car on a level ground 30 feet from a wall and measure the height from the ground to the bulb and mark on a wall (do this for highs beams and low beams if the bulbs are separate, if highs and lows are the same bulb, only do it for the lows)

For Low Beams: If the headlights read VOR, then aim the brightest part or cutoff part just below the mark on the wall. If it says VOL or nothing, aim them 2 inches below the mark on the wall.

For High Beams (if separate from low beams): Aim the headlight directly at the line you marked on the wall.