Shimano E-tube Di2 Wire 1200mm

kr33m0 · #1 03-08-2022, 02:13 PM

What is this used for? It's missing in my Di2 build parts. Thanks.

BdaGhisallo · #2 03-08-2022, 03:07 PM

I use it to run from the handlebar mounted A junction box to the frame and down inside the downtube to connect to the internal junction box that I stuff in the base of the seat tube.

Philster · #3 03-08-2022, 06:29 PM

Yup. The instructions for my Crux listed it as going between Junction A and Junction B near the BB. I couldn’t find one so I got two shorter wires and joined them with the Bluetooth module.

kr33m0 · #4 03-09-2022, 02:16 PM

Quote:

Originally Posted by Philster

Yup. The instructions for my Crux listed it as going between Junction A and Junction B near the BB. I couldn’t find one so I got two shorter wires and joined them with the Bluetooth module.

How did that work out for you? Any issues? Did you use two 550mm? Thanks!

kr33m0 · #5 03-09-2022, 02:17 PM

Quote:

Originally Posted by BdaGhisallo

I use it to run from the handlebar mounted A junction box to the frame and down inside the downtube to connect to the internal junction box that I stuff in the base of the seat tube.

So I am guessing this is critical for the Di2 setup, LOL!!!

Gummee · #6 03-09-2022, 03:22 PM

Quote:

Originally Posted by Philster

Yup. The instructions for my Crux listed it as going between Junction A and Junction B near the BB. I couldn’t find one so I got two shorter wires and joined them with the Bluetooth module.

If you don't need the BT another b junction works fine.

I've got one a junction in my aero bike with 2 b junctions. Had to run separate wires to the shifters thru my integrated stem/bar

M

JWB475 · #7 03-09-2022, 04:42 PM

If you are handy and have the tools, splicing Di2 cables isn't all that difficult. I bought some 2 conductor 24 AWG cable off Amazon and it was about the same diameter, no issues...

Philster · #8 03-09-2022, 04:48 PM

Quote:

Originally Posted by kr33m0

How did that work out for you? Any issues? Did you use two 550mm? Thanks!

It’s worked great so far. I can’t remember the wire lengths I used, but it’s really just a matter of reaching the distance you need while leaving the junction inside the frame. I used the Bluetooth module because I wanted update firmware and I don’t have a windows computer.