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Air horn wiring schematic
I got an air horn kit for Christmas and am working out all the details for wiring it up. I do not have upfitters and will be using illuminated toggle or rocker switches. I want one switch to enable/disable the compressor but only when the key is on. I want another switch to toggle between stock horn or air horn when the steering wheel horn button is pressed. I may also add another momentary switch to blast the air horn regardless of the position of the previous switch. Pretty standard stuff.
I've been doing quite a bit of research on the forums and think I have it all worked out but wanted some opinions on the schematic I've come up with. I plan to use the purple blunt cut ACC wire under the dash to power the switches used to actuate the relays. Constant 12V will be a fused 4 AWG wire from the battery. This is overkill I know but I also want to power an inverter and maybe some other accessories.
Hopefully I can find the stock horn wire inside the cab. From my research I understand the stocker has constant 12V with a ground trigger that is yellow w/ red tracer. If I can't get it inside then I'll put the relay out at the horn and use the pass-thru wires.
I welcome all comments and suggestions. Thanks in advance.