powering two lights with SPDT switch
simulate this circuit &ndash; Schematic created using CircuitLab

Figure 1. If you are switching DC a diode will allow the UP switch to switch on both lights and prevent backfeed when DOWN is on. D1 and D2 represent the lamps with current control (resistors or CC PSU) not shown.

One problem with this is a 0.7 V drop across D3. The D1 lights may dim slightly when switching from down to up. This may not be a problem since you pass through the OFF position.







simulate this circuit

Figure 2. For AC the diode won't work. A relay solves the problem.