In which I test (and implement) some alternative wiring possibilities for SRAM eTap gear shifters

The SRAM eTap Aero groupset was released in 2015 with a version aimed at road bikes where the gear change controls were switches in the brake levers, and which communicated with the front and rear derailleurs via a proprietary wireless signal. For time trial bikes, the eTap aero was released, where switches mounted on the aero bars were wired to a "blipbox", which wirelessly relayed commands to the gear mechs. Typically, one would set up a pair of switches (the "blips") on the base bar and a second pair of switches (the "clics") on the ends of the aero extensions. The blipbox has four sockets, two for upshift and two for downshift - each clic or blip switch is connected via one socket. The blipbox also has some buttons for shifting. The annoyance there is that the size of the blipbox makes it difficult to tuck it away in the time trial frame.