No more pics but here is a brief description.
1. Remove the saddle and raise the fuel tank
2. Locate the usable space in the engine bay; it is just below injector's #4, close to the right frame leg.
3. Connect two wires on the horn, which will reach the battery bay.
4. Secure the horn-mounting stud by a tie-wrap to the metal tubing at the end of a hose inside the frame leg. Look and you will see what I mean. Make sure the horn will not be able to carve on any hoses. Also secure it around the right frame leg, so it won't make a rodeo dance in the engine bay. Take care of details so it will be securely fixed and not interfere with other components.
5. Route the two wires along the existing harness on RIGHT side up to the battery bay. I always put wires in braided nylon shielding; it looks better and gives some extra protection.
6. Connect two wires to the stock horn, I connected them in parallel with the existing wires.
7. Route the two wires upwards, thru the throttle wire clamp, down in the engine bay RIGHT side, along the previous mentioned harness.
8. So, now there is four new wires in the battery bay, two from the stock horn, and two from the new horn. From here it should be quite easy to finish the connections with the use of a relay that came with the Stebel. Don't forget to include a 20 amp Fuse.
9. The picture below shows how I connected the stuff, if my memory serves right...