Shimano ALFINE S7051 Series Dealer's Manual page 59

CONNECTION OF THE ELECTRIC WIRES
Connection of junction
Assembly of the bottom bracket shell
1
(A)
2
When installing the inner cover to the
hanger, pass the electric wires for the
motor unit and the built-in battery over
the inner cover.
(B)
Install the inner cover to the bottom
(A)
bracket adapter.
(B)
59
(A)
Inner cover
(B)
Adapter
(A)
Inner cover
(B)
Adapter
NOTICE
If using a frame which does not have enough
space between the inside of the bottom
bracket shell and the inner cover to route the
electric wires use an inner cover which is sold
separately.