Originally Posted by Multiplicity
You could run one 30amp relay controlled off the CanBus to power the lights and that box and never worry about enough power to the headlamp ballasts. Let the CanBus control the relay and you'll have the delayed timeout too.
Would it be possible to hook a relay to the light circuit for control and use a 30 amp relay to the HID ballasts ?
I hate using an under rated control device. Time will tell when your feed wire melts
Some of the HID kits out there draw a momentary 15 amps at cold strike. I would use a relay with at least 15 amp rated contacts, 30 amps is better.