On the coil pack there is a block connector with 3 wires going in to it, just plugs out.
You need to splice the two blue negative wires from the Omex unit to the two outer wires on the connector.
Then you need to run the red wire to an ignition positive, and the black wire to an earth.
If you have the launch control model you will need to also run the launch wire to the button and to a negative.
Make sure its a twin coil Omex unit.
Hope this helps.