Ignition Coils; Fuel Pump/Main Relay; Secondary Air Valve; Octane Selector Connections - KTM 2003 950 Adventure Repair Manual

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Ignition coils

The ignition coils are mounted directly on the spark plugs; the same
ignition coils are used for the injection engine as for the carburetor
engine.
Fuel pump relay
The fuel pump relay is installed under the seat.
Each relay has a coil and at least one load contact; a magnetic field is
created when the coil is supplied with current, which attracts a contact
plate, closing the load contact.
The control unit uses the fuel pump relay to switch the fuel pump on or
off if the engine Stalls or a crash is imminent.
Main relay
The main relay is installed under the seat.
Its mode of operation is similar to the fuel pump relay. The main relay
supplies the control unit, heater for both lambda probes, both ignition
coils, the secondary air valve and both injection nozzles with current.

Secondary air valve

The secondary air valve is attached to the air filter box. It consists of a
coil and a valve. The control unit sets up a ground circuit during the
warming-up phase, causing current to flow through the coil which
causes a magnetic field to be created, causing the valve to open.
Fresh air is drawn into the exhaust resulting in afterburning.
Octane selector connections (990 Adventure only)
If fuel having at least 95 octane (ROZ) is not available, you can easily
activate the corresponding ignition curve by reducing the ignition
timing.
A plug and socket connection (brown/black cable) is located near the
upper shock absorber holder.
If the two connectors are joined, the ignition curve for fuel having at
least 95 octane (ROZ) is activated.
If you disconnect the plug and socket connection, the ignition curve for
fuel having 80 - 94 octane (ROZ) will be activated. Although this will
cause the engine to lose some of its power output, it will prevent
knocking combustion from low-grade fuel that ultimately leads to
engine damage.