Skyranger Nynja Manuel De Montage page 209

d) The ignition switch wires must also pass through the firewall, but keep them
away from the others. Amongst other (safety) reasons, this should reduce
electrical noise which may be audible in headsets and on the radio.
e) The fuse box can be riveted over the right central cabin tube behind the
instrument panel, and also on front of instrument panel Figure 201.
The contacts can be conveniently connected together, where required, by
drilling one hole through each of the protruding contacts in a line and soldering
a length of solid wire into the holes.
Figure 201; fuse box inside and outside instrument panel.
f) The connections on the cabin side should be made according to the
instrument instructions and the electrical system schematic.
g) A common ear thing bolt can be fitted to the base of the instrument panel to
provide a convenient earth point for the instruments and other connections,
Figure 202.
h) All switches in aeroplanes should be UP for ON (in the sense of running,
powered etc.).
Note: "On" labelled on the switch is actually OFF as far as the engine is
concerned, as the magnetos are grounded to prevent operation.
On the 912 the master switch is a double-pole single throw (DPST) type, to
allow it to turn off the power from both the battery and the regulator, as the
regulator draws current even when off. On the Jabiru a single-pole switch is
used and the regulator is permanently connected to the battery, as it draws no
current when off.
Nynja Manuel de montage Version 5
13.4..Batterie et système électrique
209