I bought a pair of hella horns a few months ago and only recently decided to wire them up properly.. (to the battery and use the relay). I've used this diagram to wire them up, but the still don't seem to be working. I haven't used a soldering iron because I do not own one, so I just twisted them together when required. I have connected the power to the positive terminal with 20amp fuse. I still am not sure what I've done wrong..
I own a 2005 3.0R Liberty.