H3 bulb not working!!

[RushFactor#9]

Can anyone who understands how H3 bulbs work help me out?

My passenger low beam wiring harness melted after the bulb over heated. Since the harness couldn't be fixed, I purchased and installed some projectors.
Read about it here: http://www.dsmtuners.com/forums/showthread.php?t=251798

Now with the brand new projectors, my passenger side low beam H3 bulb will not work (the very same side in which the low beam melted). I've checked the bulb and even used a circuit tester to see if the bulb was getting power. Its a cheap little circuit tester but it still lights up that it has a current. I touched the tester to the back of the bulb that wasn't working and it light up, showing that it has a current. Touch the driver side bulb that does work and it lights up as well.

Keep in mind its only the passenger low beam, the high beam and turn signal work. The drive side is fully functional (turn signal, low and high).

So how is it that the bulb is receiving power but the it will not light up? Could it be a relay problem? A fuse even? I was told by my local Mistubishi dealer that one relay/fuse controls all the lights. If a relay or fuse has a gone bad all will not work. So is this a wiring issue in the projector housing itself or? Its just soo freaking confusing that the damn this is getting power but doesn't light up.

PLEASE HELP!

 

[luv2rallye]

So how is it that the bulb is receiving power but the it will not light up? Could it be a relay problem? A fuse even? I was told by my local Mistubishi dealer that one relay/fuse controls all the lights. If a relay or fuse has a gone bad all will not work.

Your problem is the ground wire (black wire on the headlight connector) is not connected to ground anymore preventing the light from turning on. And yes only one relay and fuse runs all headlights.

 

[RushFactor#9]

Thanks for the reply. I looked into the housing and see a black wire, but I can't tell where its running to. I had to bolt everything back up because I needed to drive the car.

I'm going to see if I can fix the issue without having to take the damn bumper back off again.

 

[RushFactor#9]

EDIT: just to make sure your taking about the black ground wire in the headlamp assembly itself, correct?

 

[luv2rallye]

I'm talking about the black wire on the original 3 pin headlight connector which is suppossed to go to ground (thru the harness) and probably now doesn't because it's broken or melted or you didn't connect it up. I don't have projectors but I assume they each still use 2 wires if only one beam (either high or low) or 3 wires if both high and low beams are in the same projector unit. The 3 wire ones I assume would be made to plug right in to the original connector. If you have separate units for high and low beams, then the low should use the original connector's red/blue and black wires while the high should use the red/blue and red wires. Note that the red/blue is +12V while the other wires provide the ground (high beam ground is switched in/out with the high beam switch on steering column). PM me with any questions and the way you hooked them up if still have problems.