Using engine overspeed protection
If a travel speed signal is used as a signal source on vehicles with manual
transmission, there must be an engine overspeed protection system in order
to prevent damage to the engine.
If you press the clutch while the cruise control is activated, the cruise control
must automatically switch off as the engine may otherwise be damaged.
There are two types of engine overspeed protection system:
If you use the blue cable to transmit the speed signal, you can connect the
yellow cable to transmit the engine speed and therefore ensure the engine
is protected.
If there is no engine speed signal, you can use the clutch switch. Install
the clutch switch on the clutch pedal (fig.81, page 7) so that the cruise
control switches off automatically when the clutch pedal is pressed.