Hy REAL_RAT_FINK, on a four headlight system when the headlights are horizontal the inner headlights are high beam only, when you activate the high beams all four headlights are on high beam. This was actually a question on my final exam to get my mechanics ticket, as was the case with a lot of the questions, the true correct answer was not among the answers. Firstly the question did not specify the layout horizontal or vertical, and no answer said all four lights, hope that helps.
