Shimano GRX RX 815 Series Dealer's Manual page 31

INSTALLATION/REMOVAL
OVERALL WIRING DIAGRAM (external battery specifications)
Electric wire (EW-SD50/EW-SD50-I)
(G)
From battery mount to junction [B]
(H)
From front derailleur to junction [B]
(I)
From rear derailleur to junction [B]
(J)
From wireless unit to junction [B]
` About the branch type junction (EW-JC130)
Three types of EW-JC130 are available.
EW-JC130-SS
EW-JC130-SM
EW-JC130-MM
TECH TIPS
• If using EW-WU111, use it in combination with BT-DN110, BT-DN110-A or BM-DN100.
• Refer to the dealer's manual for EW-WU101 for information on wiring when using
EW-WU101 as the wireless unit.
L1
L2
L1 (mm)
350
350
550
(G) + (H) ≤ 900 mm
(G) + (I) ≤ 1,100 mm
(J) ≤ 1,400 mm
L3
L2 (mm)
50
50
50
31
L3 (mm)
250
450
550