I'm thinkin .. that is prolly the light source.. I may be wrong .. sure I can cut it off .. Thats what i do metal fab.. plasma take it right off .. LOL
As stated already the light source, LEDs, are built into the frame. The ugly chrome piece is part of the back plate that the frame mounts to. Unfortunately, the ugly chrome's purpose is to cover the large hole in the fender that the wiring plug goes through to power the LEDs in the frame.
Kuryakyn for some reason decided to position the plate below this hole in the same location the stock plate is located. Had they decided to locate the plate higher up, like others have done when mounting just the frame to the fender by drilling, they would not have needed that ugly chunk of chrome to hide the hole in the fender.
This is why I have manufactured my own back plate that positions the frame high enough up to cover the hole and still uses the factory mounting holes already in the fender, so no drilling is required. Since my bike came in late last year and went right into storage after the 1,000 mile service I have not mounted the new frame yet.
Here is a pic of the back plate I manufactured out of 1/8" stainless steel. The 2 fender mounting holes are countersunk so after the back plate is mounted to the fender the screws will not stick up and interfere with the license plate. The 4 holes in the corners are tapped to allow screwing the Kuryakyn frame directly to it.
I just need to wait until I get my bike out of storage so I can decide what thickness spacers I need to keep the back plate and frame from touching the fender. Then I can put it all together and get some final pics to share.