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<h2>What is the wiring harness in a car？</h2>&nbsp;An automotive wiring harness, also known as a cable harness, wire harness, or wiring loom, is a structured set of wires, connectors, and terminals that are used to transmit electrical power and signals within a vehicle. It serves as an organized and efficient way to connect various electrical components and devices in the vehicle's electrical system.&nbsp;A&nbsp;wiring harness for car is to provide a secure and reliable electrical connection between different components, such as the engine, transmission, lights, sensors, dashboard controls, audio systems, and more. It eliminates the need for individual wires to be routed and connected separately, making the installation process faster, more efficient, and less prone to errors.&nbsp;<h2>Components of an automotive wiring harness</h2>&nbsp;<ol><li>Wires: Conductive paths in the wiring harness that carry electrical current. They are color-coded for easy identification and made of copper or aluminum for efficient conductivity.</li><li>Connectors: Join different sections of the harness together or attach it to electrical components. They come in various shapes and sizes, like plugs, sockets, and terminals, designed to fit specific connectors on vehicle components.</li><li>Terminals: End points of individual wires within the harness, connecting to connectors or components' electrical terminals. Terminals are crimped, soldered, or connected through other methods for secure electrical connections.</li><li>Protective Covering: Encases the wiring harness to shield wires from heat, abrasion, moisture, and external factors. Common coverings include plastic tubing, convoluted loom, and heat-resistant tape.</li></ol>&nbsp;<h2>Car wiring harnesses&nbsp;benefits</h2>&nbsp;<ul><li>Improved Reliability: Wiring harnesses are designed to be durable and resistant to wear, reducing the chances of electrical failures or short circuits.</li><li>Simplified Repairs: Since the wiring is neatly organized and labeled, troubleshooting and repairing electrical issues become more manageable.</li><li>Time and Cost Efficiency: Pre-manufactured wiring harnesses speed up the vehicle assembly process, reducing labor costs and the risk of assembly errors.</li></ul>Standardization: Wiring harnesses help standardize electrical connections across different vehicle models, simplifying manufacturing and maintenance processes.

Wiring Harness

Air Cleaner

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Air Filter Box

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Air Flow Sensor

Air Intake Duct

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Air Intake Hose

Air Intake Manifold Actuator Control Solenoid

Air Intake Manifold Flap Adjuster

Air Intake Manifold Runner Control Sensor

Air Intake Resonator

Electric Vacuum Pump

Engine Air Duct Assembly

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Engine Air Filter

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Intake Manifold

Intake Manifold Flap Actuator

Intake Manifold Repair Bracket

Intake Manifold Runner Control Valve

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Intercooler

Intercooler Hose

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Oxygen Sensor

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Pressure Sensor

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Supercharger Pulley Drive Unit

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Supercharger Snout Rebuild Kit

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Throttle Body

Throttle Cable

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Throttle Position Sensor

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Turbocharger

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Turbocharger Gasket Kit

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Turbocharger Oil Line

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Vacuum Pump

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Air Filters & Intake Systems

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Camshaft Adjuster

Camshaft Adjuster Cover

Camshaft Kit

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Camshaft Timing Gear

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Camshafts

Chain Tensioner Adjuster

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Cylinder Head

Cylinder Head Assembly

Eccentric Shaft Actuator

Engine Timing Belt

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Engine Valve Cover

Engine Valve Cover Gasket

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Harmonic Balancer

Rocker Arm

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Rocker Arm Shaft Lifter Assembly

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Timing Belt Kit

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Timing Chain Gear

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Timing Chain Kit

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Timing Cover

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Timing-Control Valve Solenoid

Valve Cover Gasket

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Valve Lifter Guides

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Valve Lifters Tappet

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Cams, Timing & Valvetrain

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Belt Tensioner

Coolant Level Sensor

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Crank Installer Tool

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Crankcase Breather Hose

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Crankcase Breather Valve

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Crankshaft Position Sensor

Crankshaft Pulley

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Engine Oil Dipstick

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Engine Oil Dipstick Tube

Engine Oil Filter

Engine Oil Pan Gasket

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Flywheel

Harmonic Balancer Crankshaft Hub

Knock Sensor

Oil Baffle

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Oil Cooler

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Oil Cooler Line

Oil Drip Pan

Oil Filler Cap

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Oil Filter

Oil Filter Base

Oil Filter Cover

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Oil Filter Housing

Oil Filter Housing Cover

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Oil Level Sensor

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Oil Pan

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Oil Pump

Oil Pump Drive Gear Shaft

Oil Pump Pickup Tube

Oil Separator

Serpentine Belt

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Cranks, Pistons, Oil & Components

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Camshaft Position Sensor

Camshaft Position Sensor & Magnet Kit

Connector Plug

Distributor Cap

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Electronic Ignition System

Engine Valve Covers & Ignition Coils Kits

Glow Plug

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Glow Plug Relay Module

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Ignition Coil

Ignition Coils & Spark Plugs & Wires Kits

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Ignition Coils & Spark Plugs Kits

Ignition Coils & Wires Kits

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Ignition Distributor

Ignition Lock Cylinder

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Ignition Starter Switch

Ignition Switch Actuator

Kill Switch

Knock Detonation Sensor

Relay

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Spark Plug

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Spark Plug Wire

Electronic Control Modules, Ignition & Distributors

Engine Wiring Harness

Intake Manifold Repair Kit

Pulley

Engine Components & Accessories

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Active Grille Shutter Actuator

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Auxiliary Water Pump

Drive Motor Inverter Cooler

Electric Engine Water Pump

Engine Coolant Air Bleeder Valve

Engine Coolant Pipe

Engine Coolant Shut Off Valve

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Expansion Tank

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Expansion Tank Mounting Plate

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Fan Pulley Bracket

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Fuel Cooler

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Overflow Hose Connector

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Radiator

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Radiator Control Fan Module

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Radiator Core Support Skid Bar Plate

Radiator Fan Cooling Motor

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Radiator Hose

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Engine Cooling

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The engine comprises many essential elements such as the lower cylinder block, upper cylinder head(s), and the cooling & lubricating systems. With A-Premium aftermarket engine components, you can expect that your engine deliver years of reliable performance. We offer a diverse selection of engine components from air filters and ignition coils (kits) to fuel pumps to cater to your needs.

2012 GMC sierra%201500 Wiring Harness

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