There are four colors that light two at a time but only three wires.
I was considering taking a bulb(diode) from the end of the string and soldering its leads together, then replacing the one that seems to be out further up the line. Just not sure if this will unbalance anything.
I was considering taking a bulb(diode) from the end of the string and soldering its leads together to continue the circuit, then soldering it in place of the one that seems to be out further up the line. Just not sure if this will unbalance anything.