Retractable null modem (RS-232C) cable

Step 4: Note the Wire Arrangement

After putting a pin on three wires, you're ready to add the connectors. This picture shows the wire layout. Note the #5 wire on both ends, this shows you how they're arranged since you can't tell with the cable wound up. Remember this is a cross-over cable, so the 2 and 3 wires are swapped on one end. You have to do this manually when inserting the pins into the connectors.