Force same wire potential in symbol creation, Promise V8i over AutoCAD

In symbol creation, is there a way to force two terminal points to be the same potential and therefore the two wires connected would have the same wire number and properties?

I have a power supply schematic symbol that has a pair of V+ terminals and a pair of V- terminals.  Obviously the pairs are jumpered internally, but if I show a jumper externally when in schematic mode, thats the way it would appear it needs to be wired externally.  Please see attachment.PWR-MDR.dwg