Triumph Tiger Explorer XR 2016, Руководство по обслуживанию

Страница: 18 / 750

Disciplines
Switch off the ignition prior to making any connection or disconnection in the system. An electrical surge can be
caused by disconnecting 'live' connections which can damage electronic components.
Ensure hands and work surfaces are clean and free of grease, swarf, etc. as grease collects dirt which can
cause tracking or high-resistance contacts.
Prior to commencing any test, and periodically during any test, touch a good earth to discharge body static. This
is because some electronic components are vulnerable to static electricity.
Electrical Wires
All the electrical wires are either single-colour or two-colour and, with only a few exceptions, must be connected
to wires of the same colour. On any of the two-colour wires there is a greater amount of one colour and a lesser
amount of a second colour. A two-colour wire is identified by first the primary colour and then the secondary
colour. For example, a yellow wire with thin red stripes is referred to as a 'yellow/red' wire; it would be a
'red/yellow' wire if the colours were reversed to make red the main colour.
Electrical Testing
For any electrical system to work, electricity must be able to flow in a complete circuit from the power source
(the battery) via the components and back to the battery. No circuit means no electrical flow. Once the power
has left the positive side of the battery and run through the component it must then return to the battery on its
negative side (this is called earth or ground). To save on wiring, connections and space, the negative side of the
battery is connected directly to the frame or engine. Around the frame and engine will be various other ground
points to which the wiring coming from components will be connected. In the case of the starter motor it bolts
directly to the engine, which is bolted to the frame. Therefore the frame and engine also form part of the earth
return path.
Ohm’s Law
The relationship between voltage, current and resistance is defined by Ohm’s Law.
The potential of a battery is measured in volts (V).
The flow of current in a circuit (I) is measured in amperes.
The power rating of a consumer is measured in watts (W).
The resistance (R) of a circuit is measured in Ohms.
Ohm’s law, for practical work can be described as -
Power is calculated by multiplying Volts x Amps -
By transposing either of these formulae, the value of any unit can be calculated if the other two values are
known.
For example, if a battery of 12 V is connected to a bulb of 60 W:
the current flowing in the circuit can be calculated by using -
Tiger Explorer XR Series
14 of 746
GENERAL INFORMATION