Di2 junction box - older shimano

[moutondc@gmail.com]

I have a 2104 TCR with Di2. My A junction box seems faulty, in fact it is dead. It looks like a connection issue. Problem is that the new junction boxes have connections for all the ports...........where my box has one port for the power, and the other 3 wires runs into the box. It is also a sealed unit. Any suggestions................or a bike shop in the Western Cape that specializes in Di2 ?

 

thanks

Daniel

[Di2Terry]

Hi! Those three wires that go into the junction should be the only E-Tube wires.

 

I think that other one is not power, but a brake cable - can you confirm that? ;-)

[Schnavel]

Do you have Ultegra or Dura Ace 10 speed?

 

I'm guessing Ultegra from the photos.