First off, I want to thank you for posting you article on AUX switch, It has been a great help to me. I plan on installing one set of fog lamps, one set of spot lamps, and one set of driving lights on my 09 Ram. I want the fog lights to com on with the low beam lights, and the driving lights to come on with the high beam lights. and the spots to run independently from the head lights and operate only from the aux. switch.
To accomplish this I tapped two trigger wires for the relays one and two into the high and low beam headlight feed at the headlight plug drivers side. Can I use the hot trigger wire from the low beam lights to trigger one relay closed so the fog lights operate when the low beams are on, by feeding a feed to the fog lights through #87 and # 30 from the battery when the relay trips by the low beam trigger wire. Then when I toggle the high beam switch on the steering column to high beam the # one relay would drop out and the #2 relay would trip from the high beam trigger wire and the driving lights would get their feed from the battery. If this would work do I need to be concerned about protecting the Aux. switch from stray voltage when the relay trips. I would be operating two 130w floods, and two 55w fog lights on a flip flop set up. I notice that on your drawing there isn't any provision or mention of voltage spike or protection for the electronics if it occurs, is it necessary do you think?
I basically want to use the Aux as a master switch for the extra lighting, If I don't need or want the extra lighting at all times then the Aux switch would act as a master switch preventing the extra lights from coming on , and the factory set up could carry on as normal.
I had first intended to use the four relays on the aux switch to operate the relays on the lighting harness that comes with the lights I am installing, but this may be too redundant. I would appreciate your comments you may have in this regard. The spots would be operated by the aux switch only, and the #4 relay would be for future use.
Hope I haven't confused you!
Thanks
Daffy