When we installed "dual filament" amber LED lights on the rear of our bus as turn signals. We connected both hot leads to the turn signal. This make the turn signals brighter, since it is flashing both the turn and marker LEDs. Jack
Jack, the LED lights that Bob is using don't work that way. It's not necessary to connect both wires -- the light will come on at full brightness just by using the "turn" wire. The "position" wire can be ignored.
You're correct, though, for dual-filament incandescent lights -- wiring both the "turn" and "position" wires to the turn circuit will give you just a touch more brightness.