TRM tank, but the inside is modified.
This is the shifter for the SA 3-speed coaster rear. The switch for the light is in the center of the shift dial. The cable housing exits through its own tube located between the center of the top tubes and down to the shifter.
Wiring looks ugly, but I wanted to leave plenty of extra for Mk2, which will have more electrical features and a rear fairing. You can kind of see the 12V 2200 mAh li-ion battery in the nose. Oops, I just realized I forgot to shrink up the ends on those butt connectors!
To finish off the aero profile of the tank, I took some clear lenses off some cab clearance lights and sanded them down until they matched the diameter of the tank. Thanks to the diffusion lines built into the lens, keeping it even while grinding was easy. Behind the lenses are the 1" LEDs most people are using for these. Brighter than I thought they'd be! After too much deliberation on how to stick the lenses on, I finally realized hot glue was the perfect solution (and much easier than anything else I was planning to do, like plastic weld an internal tab and external seat for a screw).