I think I understand the basic premise of a relay. It is like a circuit that is activated with a switch and routes the high amperage through the relay rather than through the switch. Have I got that right? What I am not sure of though is when I should use these in my MKIV/Coyte build. I see 3 relays in the Ron Francis fuse box so I assume those are for things like the headlights, horn maybe? I have Lucas-style switches on my dash for hazard lights, wipers, and fog lights (LED). I also added some footbox lights, and a couple USB/12V plugs, but otherwise my electrical is pretty basic. I have swapped out all of the incandescent lights for LEDs. Should I add relays to any of these items?
Thanks,
David