I installed a Wolo "Bad Boy" in place of the stock horn. Big improvement. You need to use a bigger fuse.

 

I agree with you Mistermike. I put one of the Wolos on and was amazed how much difference there was. I was almost got sandwiched by a couple trucks in Chicago one day that didn't see me along side them on I-294 and my OEM whimp horn did nothing to get there attention. I knew something had to change after that day!

Very easy install and was only around $30 . I did not change anything with fuse though and have had zero problems...