Shimano Ultegra Di2 Wire Harness

• Requires SD50 E-tube wire to connect to frame junction box
• SM-EW67A-E Cockpit Junction Box connects to STI levers with built-in E-tube wires
• OEM front wiring kit for Ultegra Di2 6770
• Not compatible with Internal Battery (BTR2), due to lack of charging port
• LED battery charge level indicator
• Rear Derailleur adjustment mode
• Use Di2 system checker to update component firmware from http://e-tubeproject.shimano.com/
• All Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions