Question

Question 1)

a) A vehicle without a factory fitted security alarm system can be fitted with an aftermarket security alarm system. What vehicle electrical systems does this alarm system wiring need to be connected to.

b) The vehicle owner has asked you to install a navigation system that has road traffic speed alerts and speed camera locations. What advice would you provide the vehicle owner prior to fitting this device

c) How are the male and female terminals removed and replaced in a multipin connector

d) After installing trailer lights and harness, you should carry out a circuit test of the lights. Explain how this is done.

e) All terminals have a defined wire size range. If I had a wire of 2.0mm / 15 AWG, what terminal should I use? Options are:

1. Red insulated terminal.
2. Blue insulated terminal.
3. Yellow insulated terminal.
4. It doesn’t matter as all these answers are correct.

Answer 1

a) These aftermarket alarms are designed on the basis of universal use i.e., compatible with all 12-volt negative ground electrical systems as against one carmaker's vehicles.

The easiest aftermarket alarms are one piece units with a siren and control module. the foremost common sort of sensor may be a shock sensor and two wires (12-volt constant power and ground) which are connected to the car's battery. this kind of alarm is produced by vibration transferred to the shock sensor, or by voltage changes on the input (the alarm assumes that a sudden change in voltage is thanks to a door or trunk being opened, or the ignition being turned on).

Mostly these aftermarket alarms are wired into the vehicle's electronics individually. Effectively, these kind of alarms having inputs for power and ground, also as for positive- and negative-switched door open circuits, negative trunk and/or hood circuits, and ignition-switched circuits to detect the ignition being turned on; aftermarket alarms also usually have a shock sensor which can be built into the control module or external thereto .

Although, some aftermarket alarms have provisions for optional sensors (these must be purchased separately). the lean sensor can sense the vehicle being tilted (alerting to towing). Tilt sensors are available digital or mercury. A digital sensor is more accurate since it sets itself, allowing the vehicle to be placed on a hill and not cause false triggers. A sound producer or glass breakage sensor senses only the sound of glass breaking. Typically, a sound discriminator sensor are often eliminated employing a shock sensor. Infrared, Proximity or motion sensors sense motion inside or outside the vehicle; these are typically installed on convertible or T-top vehicles. These sensors are usually adjustable so as to avoid false alarms. for instance , a shock sensor will sometimes vibrate thanks to loud noises within the area like heavy trucks, loud vehicle exhaust, or an accidental bump to the car from a passerby. Mostly proximity sensors often are responsible for false alarms in parking lots when a passerby is entering or exiting a vehicle parked next to the armed car. These often cause the alarm to falsely sense an attempted break-in.

b) GPS navigation system for vehicles have numerous advantages over phones including the very fact that they don’t require data connection and supply you with a greater amount of data .

Here are some best navigation system for vehicles:-

• Aonerex 7” Touchscreen GPS Navigatior.
• Garmin Nuvi 57LM GPS Navigator System.
• TomTom VIA 1515M GPS.
• OOTSUTU 7” Portable Touchscreen GPS.
• Garmin DriveSmart 60 NA LMT GPS Navigator System.

The Aonerex 7” Touchscreen:-

This GPS Navigator is basically applauded for its crisp navigation system that produces reliable satellite connections in virtually any setting. Therefore, it's a very dependable GPS system that's good at keeping a connection and providing up to the second directions. it'll quickly calculate the simplest route after a destination is established, then get you there without harm and on-time.

The device features a visible map, animation, and voice indication for your preferred thanks to receive directions. it's preinstalled with the newest 2020 maps of the us , Canada, and Mexico. Additionally, maps of the uk , Europe, New Zealand, and Australia are available. Updates are provided for the lifetime of the unit and at no additional cost.

This GPS Navigator delivers turn-by-turn voice navigation that's available in multiple languages. It also quickly corrects if you miss a turn and adjusts with the simplest alternative route in real-time. The voice prompts are very comprehensive and help get you to a destination safely.

Display:-

GPS Navigator features a vivid, it has 7 inch HD touchscreen. it's one among the foremost clear displays on the marketplace for car GPS navigation systems. The touchscreen is extremely responsive and straightforward to use even with bigger fingers.

The unit is shipped with a sunshade so you'll view the screen during intense daylight . The visual cues are simple with a map of the start line , the ultimate destination, also as estimated time until arrival.

Driver Alerts

The system features several different Smart Reminders. Driver alerts include voice announcements or visual displays on enlarged maps that zoom into complex intersections and other problem areas . It also reminds you of the regulation . Drivers may find notifications about upcoming gas stations, stores, schools, red lights, or high speed cameras.

Additional Features

This GPS Navigator is shipped with a car charger, back bracket, car bracket, and sunshade. there's also a user manual to find out about anything regarding the device. it's also a transportable unit that you simply can take with you if you don’t wish to store the device in your car.

Anorex features a very good warranty. the corporate will provide after-service look after five years of use within the us . there's also a 90 day a refund guarantee and a couple of year full warranty.

Pros
Clear and vivid 7” display
Responsive touchscreen
Great reputation of staying connected to satellite
Quickly autocorrects if you miss a turn
Smart Reminders provide variety of various alerts
Shipped with a spread of GPS accessories

C) The repair parts are limited to those connectors having common shapes and terminal cavity numbers. Therefore, when there's no available replacement connector of an equivalent shape or terminal
cavity number, please use one among the choice methods described below. confirm that the terminals are placed within the original order within the connector cavities, if possible, to assist in future
diagnosis.

1 . When a connector with a special number of terminals than the first part is employed , select a connector having more terminal cavities than required, and replace both the male and feminine connector parts.

Example: you would like a connector with six terminals, but the sole replacement available may be a connector with eight terminal cavities. Replace both the male and feminine connector parts with the eight terminal part, transfering the terminals from the old connectors to the new connector.

2. When various different terminals are utilized in one connector, select an appropriate male and female connector part for every terminal type used, and replace both male and feminine connector parts.

Example: you would like to exchange a connector that has two differing types of terminals in one connector. Replace the first connector with
two new connectors, one connector for one type of terminal, another connector for the opposite type of terminal.

3. When a special shape of connector is employed , first select from available parts a connector with the appropriate number of terminal cavities, and one that uses terminals of an equivalent size as, or larger
than, the terminal size within the vehicle. The wire lead on the replacement terminal must even be the same size as, or larger than, the nominal size of the wire within the vehicle. ("Nominal" size could also be found by watching the illustrations within the back of this book or by direct measurement across the diameter of the insulation). Then change all existing terminals with the new terminals, then insert the terminals into the new connector.

Example: you would like to exchange a connector that's round and has six terminal cavities. Then only present round replacement connector has three terminal cavities. you'd select a replacement connector that has six or more terminal cavities and isn't round, then select terminals which will fit the new connector. Replace the prevailing terminals, After that insert them into the new connector and join the connector together.

d)

Most trailers have three circuits that you're going to hook up with your vehicle. One operates the taillights, one runs the left stoplight and therefore the last one runs the proper stoplight . When it is time to show , your brake lights will flash to let everyone know which way you are going . Obviously, trailer lighting is important to safe towing.

You also need a ground wire. This provides a conducting path which is independent of the traditional current-carrying path -- a flowery way of claiming that it prevents the system from shorting out thanks to an electrical surge. So this suggests your trailer wiring plug will need a minimum of four contacts. the great news is that the quality connector for trailers uses four pins, plus the bottom . These plugs are typically flat, with the pins set during a row. Easy enough, right?

Some of the opposite common sorts of connectors use five, six or seven pins. These plugs are usually round and connect very similar to an electrical socket would. But if you simply need the brake lights and taillights attached , why would you ever need quite four pins? It's because larger trailers will occasionally have a separate circuit for running lights on the edges and front of the trailer. Your extra pins will operate these lights.

If your vehicle is pre-rigged with a four-pin plug and your trailer is prepared to travel with a four-pin plug, all you would like to try to to is plug it in and test it out by doing the following:

Turn on your vehicle lights and confirm the trailer taillights come on.
Tap your brakes to form sure the trailer's brake lights work.
Test each blinker and confirm the trailer complies.
That's all there's thereto within the best case scenario. Different situation might find you with a seven-pin connector on your tow vehicle and a four-pin connector on your trailer. this is often once you got to adapt -- literally. attend your local auto parts store and ask the specialist which adapter you would like , if you do not feel comfortable picking it out yourself. likelihood is that it'll be as easy as locating something with a label that reads "Seven-pin to four-pin trailer wiring adapter."

Light Check may be a self-contained, portable device that connects to the wiring connector of the trailer. It includes a 12-volt internal rechargeable battery, electronic diagnostics for lighting circuit analysis, ground wire, charger and directions .

Simply connect Light Check to your trailer wiring, activate the facility and press Select button for Cycle. Checking for the light will continue cycling through each of the trailer light circuits in 5 second intervals allowing one person to simply check the signal lights, brake lights, tail and clearance lights without a towing vehicle or person to help .

Use the Select button to work a person circuit continuously for over current (short circuit) and low current (open circuit). If a drag is detected, LED fault lights will indicate the sort and source of the fault