GM Holden use a two way relay to disconnect the A/C on start up the same way as your doing with the headlights. i changed the headlight wiring for bigger cables from the battery via fuses and just use the handlegrip controls to operate relays, this seems too make the headlight a fair bit brighter as well .

That is even better. You can make such relay combination with two bosch relays. In U.S. it is illegal to have on/off switch for the headlights and they must turn on with your ignition switch on. I noticed that my headlight is a little dim so I will do what you said. :thumbup: