Triumph Spitfire MK3 Handbook page 12

Trip Odometer (22, Fig. 7)
The figures within the aperture above the centre of the dial may
be used to record the distance of each journey, providing that the
figures are initially set at zero. This is achieved by turning clockwise
the knob (18), Figs. 2 and 3, which extends downwards from behind
the instrument.
Odometer (23, Fig. 7)
The figures within the aperture below the centre of the dial show
the total mileage of the vehicle and may be used as a guide for
periodic lubrication and maintenance.
Main Beam Warning Light (24, Fig. 7)
The indicator at the bottom left-hand side of the dial glows blue
when the headlamp main beams are selected and is extinguished
when the headlamps are "dipped".
Oil Pressure Warning Light (25, Fig. 7)
The centre indicator at the bottom of the dial glows green when
the ignition is switched on and is extinguished when the engine runs
in excess of idling speed. Should the tight remain on at normal
running speeds, stop the engine and check the level of oil in the
engine sump. If this is satisfactory, have the lubrication system
checked immediately.
Ignition Warning Light (26, Fig. 7)
The indicator at the bottom right-hand side of the dial glows red
when the ignition is switched on and is extinguished when the
CONTROL, INSTRUMENTS AND IDICATORS
engine is accelerated. Should the red light remain on whilst driving,
a fault is indicated in the battery charging system which should be
rectified without delay.
Air Distribution Controls (27, Fig. 8)
The distribution of hot or cold air is controlled by two flap
valves located under the facia and near to the feet of the driver and
passenger. When the flaps are closed, maximum air flow is directed
to the windscreen for demisting or de-frosting. Fully open flaps
allow maximum air flow to the area around the feet.
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