When I installed air horns on my coach I tapped into the OEM horn wiring for the trigger signal AND used the relay for the air horns main power. This instituted a slight delay for the air horns but the OEM horns worked as before. This allows me to do short toots as required for signaling but if I lay on the horn button the air horns kick in for the blast that is sometimes needed for oblivious drivers.
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Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad - Selling
2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B TOAD
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