I bought a new compressor overload and relay.The old part had 2 wires a blue and red,the new came with a relay marked 1,2,3 and 4. and also one more connector on the overload.The old part number was 218721106 and has the letters L and N on the blue wire and red wire connection points.The new part number is 5304410951 .How do you match up the numbers to the wires on the new part?Thanks