Re: EW-WU111 - can you actually recognise it? For instance, can you find it with your Garmin (assuming you have one)? Or have you got the e-wire software on a tablet/phone and gone through the pairing process?
Also, where did you end up putting the A-junction?
I have not tried to recognize it with my Wahoo, perhaps I should try. I have the e-wire app on my phone and that's what I'm using to try and pair it. The app just spins the hourglass and picks up nothing. The Shimano instructions seem to be very sparse.
I mounted the A-junction undertake saddle, basically just under the nose between the rails. I tapped a small hole in the top of the seat post to run the wires.
Well - depending on were you hid the WU111 - it may not pick it up. If it's inside the frame, it **may struggle to connect.
**This will depend on the frame, the location of the unit, etc. As the Shiv is probably thick tubing, the signal may not be getting through.
First see if you can find it with your Wahoo unit, if not, perhaps pull it out of your frame and see if it pairs then. There are some threads on here if you search on the process to pair with the e-tube software. The other thing (I think) is sometimes it helps to 'activate' it by pressing the button on the A-junction for a couple of seconds while searching. (But not long enough to put it into adjustment mode).