2000 Taurus SES-Headlights

[Vbuff]

Story:
Lost headlight on drivers side. I ran it to a garage because i had a high beam but no lo beam. They "fixed" the problem and now low beam and high beam work but are like candle power(really dim). I bought a Chilton's book and thier wiring diagrams are a little confusing for me.
Questions:
1. There are three wires on the socket...which is the ground?
2. Is it safe to ground the headlight directly to the battery?

I have already started messing with the wiring but have not lost original wiring that the garage performed. I am looking at the fuses under the hood and under the steering wheel today. I will get back on any progress.

Thanks for any help you can offer,

Vbuff (newbie under the hood)

[phantom_smack]

Check the actual plug for burn marks or a loose connectiom.

[Vbuff]

I checked all the fuses and the fuse was blown...dang 75 dollars down the drain...i hate rip off garages.