The plugs are listed in the HD catalog...I think under the pullback handlebars.
However, if you like the look of fairing mirrors, consider these. I like mine a lot.
Split Vision Fairing Mount Mirrors
See even more of the world that you just passed. This exclusive design Split Vision Mirrors minimizes blind spots and provides a wide panoramic rear view of the left and right lane, and the road behind you. The mirror features a large primary panel for normal view, and a second outboard convex panel for a wider field of vision. Slightly larger than the standard-view Fairing Mount Mirrors, these split vision mirrors offer the same full range of adjustability. A direct bolt-on replacement for standard-view Fairing Mount Mirrors, the kit also includes the hardware and mounting template required for easy and accurate installation on other models.
92085-10
Fits '96-later Electra Glide®, Street Glide® and Trike models (pair). Does not fit with Chrome Fairing Mount Mirror Covers P/N 91924-09, Illuminated Chrome Mirror Covers P/N 92600-10 or Fairing Mount Mirror Covers P/N 92200001.
MSRP US $99.95