1 of the red wires on the pump is for the pressure switch,follow the 1 that goes to the switch and just cut it off.If you use a varistream you use the 2 wires coming out of the top of the pump 1 red and 1 black no other wires are needed,that other red wire your talking about should have a clip on it for the pressure switch,that`s the wire to cut but you only lose this wire if your using a varistream.