Windlass with double coil:

WARNING: This page is about a different car, the 2002 BMW M Roadster, 2002 BMW M Coupe, 2001 BMW M Roadster, and 2001 BMW M Coupe. However, it is still accessible from the selected car via links, so may be relevant.

For use with small windows.

Attach windlass firmly to window so that both coils are turned away from application point of wire

Fig 1: Installing Windlass With Double Coil

Courtesy of BMW OF NORTH AMERICA, INC.

Feed either the upper wire end into the lower coil or the lower wire end into the upper coil
Fit reversible ratchet on coil and tension wire
Cut through approx. 10 cm of bonding joint
Feed other wire end into free coil so that the wires cross

Fig 2: Installing Second Wire
Courtesy of BMW OF NORTH AMERICA, INC.
Continue cutting bonding joint by alternately using the coils
Both wires meet ahead of both coils when removal is completed
Remove "Roll Out 2000"