Re: Subtle changes in the 07 H3
Just checked the 2007 schematics and compared to the 2006 they are the same. So, I see no reason why you could not switch the horn. The power is fed through the Horn relay and a 10 amp fuse, while the other lead goes to ground. The only interaction with the BCM is via the switch and the grounding of the relay. As long as the new horn does not draw more than 10 amps...switch it.
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Black Sheep Hummer Squadron
(ME TOO)
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