Wires, fuses and connectors:- Wiring
Wires, fuses and connectors link to and feed every electrical device
in your car. Many of the features we have come to expect in our cars are
possible because of these elements, and their reliability has improved
immensely in the last couple of years.
But increased reliability and efficiency has lead to car wiring complexity
increasing dramatically. Cars have thousands of electrical circuits from
wiring harnesses carrying huge currents to computers made up of several
printed circuit boards and devices and relying on the tiniest of electrical
As well as carrying power, for example, to the starter motor, the wiring
also has to carry analogue and digital signals between the onboard computer
and the many relays and sensors distributed throughout the car.
A break in any of the wires can result in the car failing to start.
It can be as dramatic as a sudden and complete loss of power to the engine
apparently turning over but not 'igniting' the fuel.
Wires, fuses and connectors:- Fuses
Fuses protect the wiring by providing a point of weakness. If too much
power passes through a wire it can overheat or melt and be extremely difficult
to access and replace. It may destroy a very expensive relay, sensor,
or computer circuit.
A fuse is designed to fail first and help to indentify which circuit might
have a potential problem.
Fuses should be carefully rated and located to protect the wiring they
connect. A wire that can only carry 5 amps before overheating would not
be protected by a 10 amp fuse. Although less obvious. Wiring intended
to carry 10 amps would not fail if protected by a 5 amp fuse BUT the fuse
would keep 'blowing' making the circuit useless.
Most cars have two major fuse panels.One in the engine compartment holds
the fuses cooling fans,anti-lock brake pump and the engine control unit
A second fuse panel is usually mounted under the dashboard and holds
fuses and occasionally relays electrical items in the passenger compartment.
Certain devices for instance; car radios and amplifiers often have additional
fuses built-in for additional protection.
Wires, fuses and connectors:- Connectors
Connectors allow bundles of wires to attach to a component of the car
that might have to be removed.
A simple connector can join 2 wires whereas some of the more complicated
bundles connecting the ECU to all the other devices and sensors can contain
over 100 wires.
Many electrical problems start with unreliable or poor 'connection'. They
are often the most difficult problems to identify because they are often
intermittent or only occur during damp weather. A small amount of salty
road spray penetrating a connector when combined with an electrical current
can cause electrolysis and rapid corrosion of the connector unit.
Newcastle Upon Tyne repair of all types
of auto electrics and specialising in:-
- Reversing Sensors
- Vehicle Instrument Panels
- Seat Adjustments
- Mirror Adjustments
- Auto Control Module
- Parking Sensors
- Power Train Control Module
- Climate Control
- Engine Management
- Canbus Systems
Electrical repairs to most makes of cars:-
Alfa Romeo Electrics
Land Rover Electrics
Kit Cars - Electrics Finishing
Designing and building unique wiring harnesses.
Specialist in manufacturing and fitting custom wiring harnesses for kit
Repair Auto Electrics