Stebel horn problem solved

[petenomad]

I bought a Stebel horn as a winter project and had problems with it after getting all the wiring done and mounted. I thought I would share what I found in case it helps someone else.
I didn't get the "super chrome" one and wasn't impressed by the dull finish or the look in general, so I had taken it apart and painted the compressor black in hopes of making it just blend in. I got it all put back together and was disappointed in the sound. It sort of sounded like a duck.
My first troubleshooting attempt didn't work. I couldn't remember if it was polarized and couldn't really see the bottom of the compressor with it mounted on the bike, so I just reversed the wires. This makes the compressor run backwards and you get practically no sound at all.
Yesterday I had more time and decided to fix it or replace it. I tested my wiring (OK) and tried with just the compressor. This worked, so I came to the conclusion that I must have an air leak that was preventing me from getting decent sound.. I put some teflon tape around the compressor output and put it back together. Problem solved.