TAIL LIGHT INTERNAL WIRING AND FRAME GROUNDING BOSS
The rear light wiring runs in a single stainless tube from the top of the down tube (visible just above the rear derailleur cable) to an exit at the end of the left chain stay. Just below the rear light internal is the frame grounding boss. We used the frame as a ground in order to avoid the use of an extra wire to the rear light. Also visible is the primary power wires as they come out of the top of the fork crown and enter the front rack internal.