17-01-20, 12:10 PM
Well I guess there’s no reason the contacts in an ignition switch can’t be made as robust as those in a relay, but I take your point that it’s a long and complicated path.
The headlights would be the main area where a relay would be of benefit as they take enough current for the resistance of the wiring to lose a significant voltage (though running the bulbs with a volt more will reduce their life by a factor of about 4).