Why Hot Ignition Key??

[JSeery]

Originally Posted by 40cpe

Consider putting everything (especially the AC and electric fans) but the ignition on relays and let the switch trigger the relay instead of carrying the load.

Or wire them up totally separate from the ignition switch using something like a toggle switch panel. You can still use relays even with a separate switching panel. Relays are always a good idea for a have current using device.