Originally Posted by turbo
I would disagree.
With adequate wiring and a decent switch, you can control any circuit -- that doesn't mean that you should do it that way. If it were safe to wire up that circuit without a relay, then the automotive manufacturers would have eliminated the relays in a cost-cutting measure years ago.
It is safe with adequate wiring and switches. There is no more or less safety risk one way or another when you do it right. Wiring is unsafe when the circuit is not protected by a fuse or with a fuse that higher than the current capacity of the wire. An adequately sized wire with the proper fuse flowing 100 amps is just as safe as an adequately sized and fused wire flowing 1 amp.
Relays are used for convenience, not safety. It eliminates the need for running larger wire all over the truck and eliminates the need for large high current switches. You can use little wires and switches for control and leave the big ugly wires under the hood.
If he wires his headlights with wire, a switch, and a fuse that can handle the reletively light load of two 55 watt lamps, then then there is absolutely nothing wrong and it is perfectly safe.
And no, there are no relays on the stock low beam circuit. They are direct wire from the distro box to the headlight switch, through the multifunction switch, and out to both headlighs in parallel.
Originally Posted by rwenzing
Already done. From the factory, Ranger headlamps (low and high) are controlled directly from the switches without relays.