Switch on the ignition and check the operation of the following electrical equipment.
Horn. Horn should be audible and work every time
Windscreen Washers and Wipers. Examine the wiper blades and
make sure that they have a good edge with no splits, cracks, nibbles
or rips in the blades. They should clear the winscreen leaving the
windscreen clear and with good visibilty.
Side Lights & Headlights. Turn on and check operation of
side lights. All side lights should function front and back and the
registration plate must be illuminated. All lens must be secure. Check
headlight alignment. This varies between vehicles but your beam must
not be too high as to blind oncoming traffic and must point slightly
towards the passengers side of the road, again to avoid blinding oncoming
traffic. Internal Headlight reflectors must be clear and not discoloured.
Hazard lights. Check that all indicators flash when the hazard
light button is depressed
Indicators. Ignition is usually needed. Check both sides, front
and back. Indicators must have an internal indiction of operation
ie on the dashboard.
Having a mirror or reflective surface behind the car can help in
these checks, alternatively have a friend help you.
Brake lights: Make sure ALL your brake lights work when pedal
is depressed and do not interfere with the working of indicators.
(A bad earth will cause unusual combinations of incorrect and dull
Fog Lights. Check the operation and also the indicator on the
Instrument Panel. When turning on the ignition check the following
on your instrument panel:
ABS & AIRBAG
These are specific to manufacturer but usually the light illuminate
for a period of time to show that the bulbs work and then extinguish
after a period of time. Once lights go out they should stay unlit.
ELECTRICAL WIRING & BATTERY
An insecure battery will be a reason for failure as will a battery that is leaking electrolyte.
Visible wiring that is insecure, inadequately supported or likely to cause a short will also result in a failure as will wires bared by damaged insulation.
Trailer/caravan electrical socket
There will be a basic security/damage check of 7-pin sockets,
13-pin sockets will be subject to a full electrical connectivity check and incorrectly connected or inoperative circuits will result in failure.
The car will fail if a speedometer is not fitted, is incomplete, inoperative,
has a dial glass broken/missing or cannot be illuminated.