The evidence guide provides advice on assessment and must be read in conjunction with the Performance Criteria, required Skills and Knowledge, the Range Statement and the Assessment Guidelines for the Training Package.

Overview of assessment

Critical aspects for assessment and evidence required to demonstrate competency in this unit

The evidence required to demonstrate competency in this unit must be relevant to workplace operations and satisfy all of the requirements of the performance criteria and required skills and knowledge.

A person who demonstrates competency in this unit must be able to:

observe safety procedures and requirements

select methods and techniques appropriate to the circumstances

complete preparatory activity in a systematic manner

read and interpret low voltage lighting wiring diagrams

install low voltage lighting and wiring systems to specification

retrofit LED lamps where filament lamps were originally installed

repair low voltage lighting and wiring to specification

test low voltage lighting and wiring to determine short circuits, open circuits, and earthing and ground faults

test lighting wiring harness and looms and locate faults

perform electrical connections, including crimping and soldering

remove and replace lighting wiring harness and looms

conduct installation according to workplace, manufacturer and component supplier requirements

accurately interpret test results

present vehicle and equipment in a condition that complies with workplace requirements.

Context of, and specific resources for assessment

Competency is to be assessed in the workplace or a simulated workplace environment that accurately reflects performance in a real workplace setting.

Assessment is to occur:

using standard workplace practices and procedures

following safety requirements

applying environmental constraints.

Assessment is to comply with relevant:

regulatory requirements

Australian standards

industry codes of practice.

The following resources must be made available for the assessment of this unit:

workplace location or simulated workplace

material relevant to the installation of low voltage lighting and wiring systems and components

equipment, and hand and power tools appropriate to:

installing low voltage lighting and wiring components

retrofitting LED low voltage lighting and wiring components where filament lamps were originally fitted

specifications and work instructions.

Method of assessment

Assessment must satisfy the endorsed Assessment Guidelines of this Training Package.

Assessment methods must confirm consistency and accuracy of performance (over time and in a range of workplace relevant contexts) together with the application of required skills and knowledge.

Assessment methods must be by direct observation of tasks and include questioning on required skills and knowledge to ensure correct interpretation and application.

Competence in this unit may be assessed in conjunction with other units which together form part of a holistic work role.

Where applicable, reasonable adjustment must be made to work environments and training situations to accommodate the needs of diverse clients.

Assessment processes and techniques must be culturally sensitive and appropriate to the language, literacy and numeracy capacity of the candidate and the work being performed.

Required skills

communication skills to:

follow verbal and written instructions

clarify workplace instructions and determine job requirements

gain information from appropriate persons and assistance as required

literacy skills to:

read and follow information in written job instructions, specifications, standard operating procedures, charts, lists, drawings and other applicable reference documents

obtain and record measurements

document required repairs and parts

numeracy skills to:

test, measure and analyse test equipment results compared to desired system performance

planning and organising skills to:

plan own work requirements and prioritise actions to achieve required outcomes and ensure tasks are completed on time

identify risk factors and take action to minimise them

problem-solving skills to:

recognise a workplace problem or potential problem and take action

refer problems outside area of responsibility to appropriate person and suggest possible causes

seek information and assistance as required to solve problems

self-management skills to:

select and use appropriate equipment, materials, processes and procedures

recognise limitations and seek timely advice

follow workplace documentation, such as codes of practice and operating procedures

teamwork skills to apply knowledge of own role to complete activities efficiently to support team activities and tasks

technical skills to use workplace technology and tools relating to installing and testing vehicle LV lighting and wiring systems and components, including:

specialist tools and equipment

electrical measuring equipment

technology skills to:

operate a range of electrical diagnostic test equipment

use technology to collect, analyse and provide information

Required knowledge

WHS regulations, requirements, equipment, material and personal safety requirements, including:

codes of practice

personal protection needs

wiring harness and loom fabrication techniques

procedures for removing and replacing wiring harnesses and looms

soldering procedures and techniques

cable types and sizes and current carrying capacity

various types of wiring systems found in vehicles, including:

basic wiring

twisted pair

shielded wiring

computer area network databus (CAN-bus) networks

techniques for reading and interpreting technical information, wiring diagrams and graphic symbols

diagnostic and testing procedures, including:

testing procedures for LV lighting and wiring installations, including:

following manufacturer and component suppliers’ test procedures

following original equipment manufacturer (OEM) service information

analysis of system operation using basic electrical test equipment and other industry-relevant test equipment

visual, aural and functional assessments, including:

component damage and wear

component corrosion

water and moisture ingress

repair procedures, including:

component removal and replacement procedures

component and associated system adjustment procedures

The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.

Workplace instructions may include:

electronic or hard copy instructions

verbal instructions

written instructions.

Job requirements may include:

diagnosis and repair methods, processes and equipment.

Workplace health and safety requirements may include:

personal protective clothing and equipment

hazards associated with high voltage ignition systems

safe use of tools and equipment

safe handling of material

use of fire-fighting equipment

workplace safety policies and procedures

workplace first aid

hazard control, including control of hazardous materials and toxic substances.

Procedures and informationmay include:

verbal, written and graphical instructions

signage

work schedules, plans and specifications

work bulletins and memos

material safety data sheets

diagrams and sketches

regulatory and legislative requirements relating to automotive industry

Australian Design Rules

engineer's design specifications and instructions

workplace work specifications and requirements

instructions issued by authorised workplace or external persons

Australian standards

vehicle service requirements and repair manuals.

Tools and equipment may include:

hand tools

testing equipment, including multimeters and ohmmeters

insulation testers

crimping tools

soldering iron

heat-gun or blower

wire and cabling of various colours and sizes

heat shrink sleeving and flexible conduit

terminals and connectors

electrical tape.

Low voltage lighting and wiring systems may include:

basic single wiring:

tailer wiring harness

driving lights wiring harness

side clearance lamps

high-mount rear brake lamps

ascent strip LED lamps

filament lamp to LED lamp replacement.

Inappropriate testing procedures may include:

intrusive testing (which must not be performed as it is not a recommended test and repair method), which includes:

back probing terminals and connectors and fuse holders with inappropriate test probes

probing terminal and connectors with inappropriate test probes

pushing sharp probes and objects into wiring insulation.

Faults may include:

open circuits

high resistance circuits

short circuits

damaged insulation

frayed wires

burnt wiring

water and moisture ingress

connector damage

terminal damage

diagnosis trouble codes (DTC) being set as a result of LED lamp resistance being lower than original resistive filament lamp load.

Repair options may include:

pre- and post-repair testing

identifying and testing components

diagnosing and determining faults

component repair procedures, including:

removal, replacement and adjustment procedures

dismantle, repair, reassembly and adjustment procedures

electrical measurements

visual and functional assessments, including for damage and wear.

Post-repair testing may include:

validating effectiveness of the repair action

confirming that reported fault has been rectified

confirming that no other faults are present as a result of the repair action.