I wired a horn from an old ranger in the trunk of my buddies old Corsica, wired it to the brake lights. Every time he hit the brakes the horn in the trunk went off, he couldn't seem to find where it was so he drove with it like that all day till he found it about an hour ago. There was a group of about 15 of us watching him leave, he knows nothing about vehicles so he had no idea what was going on, he was saying he thought his bakes were squealing really bad. I guess he had to put it in park at stoplights just so the horn would go off.