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In 2022 even the horn involves TWO modules to operate. I strongly recommend using the actual horn output from the horn relay in the BJB as not to mess with the modules. The wire is solid BROWN and runs in the main power distribution harness that runs from the BJB around the front of the truck. Probably the easiest thing to do is access the circuit at the horn behind the grill directly below the hood latch. If your grill will allow you to put your hand past it can be reached with out removing the grill.
 
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