It's pretty straight forward. The hardest part is getting the airbag wiring off the airbag. Mine was pinned on? I had to cut the plug off my airbag and then break it apart so I could use the horn plug(could probably cut that off-(since i cut it off the airbag anyway, I didn't do that). The ceramic nuggets plug into the airbag relay to shut the light off. Tape that in and plug it back in. All that fits underneath the adapter. It's fiddly but easy. The horn plugs into one of those weird rings.