If you are sure you want this permanent, unwrap the harness carefully, "chasing" the wires in the harness to the OEM box. You can then strip them out of the harness. Do NOT cut loose any wiring at the ballast. You can cut the connectors off and re-splice the wires together, then tape and tuck away. Only one wire is removed at the ballast--- the one going back to the OEM box.
