I need help with a HLF install in my 2019 Chevy Silverado (newer style)Custom Trail Boss. I got a Sound Off ETHFSS-SP-ISO which is what I was told works on my vehicle. Everything is wired up right to the headlights and power and grounds. Every time I apply power to the trigger wire it trips the fuse in the power wire. I’ve now install two of these units and had the same issue with each of them. Yes, Im about 90% sure it’s installed properly. The high beams still work when installed. Attached is the wiring diagram. Also, I added in these extensions, pictured below and tapped into with the flasher. This way I didn’t cut into the factor wiring harnesses. I can’t figure it out; any help or previous experience would be appreciated.
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