Need a wiring diagram

Do you know what a wiring diagram is for ? How to use a DVOM - digital volt ohmeter to test electrical circuit's ? None of the headlamps work ? hi or lo beams ? Free wiring diagrams here http://www.bbbind.com/free-tsb Enter vehicle info. Year , make , model an engine size. Under system click on lighting , then under subsystem click on headlamps . Click the search button then the blue link . Looking at the diagram i see fuse's light switch , multifuction switch , relay's - hi & lo an the headlamp assembly's .
Now watch this video
Mastering Voltage Drop Testing with Pete Meier and Jerry Truglia

Chevrolet Silverado Headlight Wiring Diagram Ricks Free Auto Repair Advice

Stuck relay, short to ground in DRL wiring, bad BCM, or bad ambient light sensor,

The BLACK wire (that you say you know goes to the battery), would be the HOT lead, shown as a TAN wire in the diagram.
Per the diagram, it actually connects to lug #1 on the STARTER RELAY.

As far as the RED and BLUE wires, you need to figure which is for the lights, and which is for the ignition.
My GUESS is RED's the ignition, and BLUE is the lights.

If your switch is a THREE position (ACC, OFF, IGN), it might not matter, as these switches are set up to run the lights whenever the ignition is on.

The older FOUR position switches (ACC, OFF, IGN, LIGHTS) are so you can manually select if you want to run the headlight or not, and would also have a fourth wire coming off the switch.

check wiring again at light. if fuse is blown both lights would be out. projector lights are one way flow , may have blowed diode in light

Your car must have the on-board computer with the more elaborate bulb-out sensor system because the wire colors you describe do not quite match the wiring diagram in the Bentley manual. Bentley does not show a "with check control module" front corner light which either means that they overlooked it, or it should be identical to the "without check control module" version.
According to the wiring diagram I have, the corner light should have a: A brown wire (ground), either Left Turn - A blue/green [blue with green stripe] wire Right Turn - A blue/brown wire and Left Park - A gray/violet wire Right Park - A gray/yellow wire
The only red wire I see in the diagram powers the relay for the fog lights.
Bentley is the best commercial manual there is, and should match the factory manuals, so I fear that you will need to use a voltmeter or test light, or trial-and-error your connection. If you have a voltmeter or test light, you can stick a needle through the insulation on the wire to test it to see if it is hot.
Based on my wiring diagram, I'm guessing that you don't want the blue wire, but that is just a guess.

Power for the headlights on the Left side (High and low beam.) comes from the same fuse... The ORANGE wire and the ORANGE/BLACK are the same, they connect in the harness. If you only lack the 12v to make the light work connect them at the headlight assembly.

If your low beam also lacks ground the Left low beam ground is shared with the right low beam ground... Run a wire from left low beam DARK BLUE to right low beam DARK BLUE/WHITE.

If its not working now then your cursed, seek a witch doctor.

You can pick up a Haynes manual. They have all necessary diagrams in them, including electrical schematics.

Regards,
matt

if you pull off your headlight you will see which wires go where, blue is normally the running light feed.

Ground problem more then likely . Looking at a wiring diagram turn signals an headlamps right front share common ground G-109 . Do you know anything about automotive electrical circuit testing ? Voltage drop testing ? Watch these videos .

Mastering Voltage Drop Testing with Pete Meier and Jerry Truglia

Electric Testing Techniques You Need to Know

Free wiring diagrams at http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model an engine size . Under system click on lighting ,then under subsystem click on headlamps .Click the search button ,then the blue links . Look at wiring diagram so you know which wire is which . Power , ground etc...
G109
In the right side of the engine compartment, near the fender well !

ya know it kinda sounds like the headlight switch that switches from high beam to low beam has a bad contact. You don't have one of those 4-beam modules that turn on all 4 lights on high beam do you? that thing screwed my whole headlight system up, I ended up throwing it in the trash.

I have the chiltons and haynes manual, I'm sure between the two we'll find a good diagram. I gotta get my youngin to open house at school, but I'll pull the books out and send you the wiring diagram.