Civic EG

i hate my weak ass stock horn and i have a horn from a gmc sierra. Whenever i hook it up and try it it wont honk loud, you can bearly hear a low sound, like if it wasnt getting enough power to it. Anybody know how i can get it to work properly? and if its possible i want to put both of the truck horns on lol

You'll need a relay to power them. I'll let someone who knows electronics better chime in to give you the details

My friend in his GTR Skyline, wired his horn's earth directly to the battery instead of the body, sounds much louder as it's a direct earth

some of the trucks had a high and low horn aka 2 horns total!!!

you may also need the second horn or it will sound funny if it's high low horn set up!!