C.A.T. Compact Adult Tricycle Owner's Manual page 7

Pull them completely
through into the battery
compartment and seat the
connecting tube into the
opening.
Reinsert the bolts and nuts as
shown.
Tighten the bolts and nuts using
the 2 allen wrenches in the tool
kit. Also tighten the small bolts
on the outside of the frame.
Connect the white plastic
connectors together and plug in
the color-coded wires to the
corresponding color wire from
the battery. Once the
connections are completed push
them into the opening next to the
battery.