I'll look when I get off work and let you know (around 3pm EST)

 

 

Sorry I'm getting back to you so late pulled a double shift. There is a ground right next to my passenger side headlight.

 

As far as I can tell part of the confusion is that the internal connections of the beam select switch are not shown correctly. The way the diagram shows it the high beams would be on if the beam select is on high regardless of the headlight switch. The only time that is needed is for the "flash" function.

In any case the lights are turned on by connecting them to ground (they always have 12V present). The beam select and headlight switch carry the full current for two bulbs, either high or low beam depending on beam select. The ground for the lights is "Instrument Panel Right Center". The additional two high beams for the sport are switched via a relay because the wiring/switch weren't designed for twice the current.

 

 

I can't remember if you tried it but what about the headlight switch?

 

Are you sure you have the correct light bulbs ? The Sport uses 9007 while the regular ones use 9004. The devious part is they have different pinouts so the wrong bulb can feed a small amount of voltage into the high beam circuit.

 

Fuse or fuse box hasn't been mentioned.

 

 

Then you have to start at the battery and chase every wire, connection, and switch down to the bulbs.