When power & ground are applied to the coil, the "switch" inside the relay is pulled down from the Normally Closed contact to the Normally Open contact.
Okay, so how do we use 2 relays to replace 3? First, we will need the 2 relays, some 10 or 12 gauge wire, a pack of 10 yellow male spade lug connectors, a pack of 10 yellow female spade lug connectors, and some wire cutters and terminal crimpers.
Make seven jumper wires, about 4" to 6" long, with a male at one end and a female at the other. Make one more jumper with a female at each end. Now remove the old relays from the car, and disconnect the battery.
Take the connector for the Open Relay, and one of the new relays. This will be the Open/Control Relay. Put a jumper from pin 30 to the thick red wire, a jumper from pin 87 to the thick purple wire, a jumper from pin 85 to the Light Green wire, and a jumper from pin 86 to the Black wire.
Now take the other new relay, this will be the Close Relay. Take the female/female jumper and connect pin 87a on the Open/Control relay to pin 85 on the Close Relay. Take the connector for the old Close relay and the new Close Relay, put a jumper from pin 30 to the thick Red wire, put a jumper from pin 87 to the thick Red/Orange wire, and put a jumper from pin 86 to the black wire.
Mount the relays using the old mounting screws, and re-connect the battery. You're done!