The pic is too small to really tell. I recently hooked mine up and it was just a matter of connecting the wire tabbed fittings together. The crimped piece fit right over the flat tab. Also had to do the same for the horn itself which in my abody, was under the battery.
If you can post a bigger picture I'll try to check back and see if it helps or shoot me a message with the pic attached at nforest [at] gmail dot com