Top: the C II] (black circles), Fe II] (red triangles), and Mg II (blue squares) line luminosities for the FUOr sample and the CTTS BP Tau. Error bars are drawn, but are smaller than the symbols for most measurements. The empty circle (triangle) for HBC 722 (BP Tau) represents the 3σ upper limit on the C II] (Fe II]) luminosity. The FUOrs are sorted left-to-right in order of increasing L_acc. Middle: the same line C II] and Fe II] luminosities divided by the Mg II luminosities. Bottom: the L_{C II]} measurements plotted against the L_acc for the FUOrs. The black line shows the best-fit relation described in Section 4.2.