12V 40A 5 Pin Automotive Relay Socket Harness - Garfour view 1

12V 40A 5 Pin Automotive Relay Socket Harness - Garfour view 2

12V 40A 5 Pin Automotive Relay Socket Harness - Garfour view 3

12V 40A 5 Pin Automotive Relay Socket Harness - Garfour view 4

12V 40A 5 Pin Automotive Relay Socket Harness - Garfour view 5

Automotive Wiring Harness

12V 40A 5 Pin Automotive Relay Socket Harness

A 12V automotive relay socket harness pre-wired for a 5 pin 40A relay. Any accessory that draws real current needs a relay rather than a switch carrying the load, and this harness supplies the socket already terminated.

5 pin socket supports changeover circuits as well as simple on and off
Wired for 40A relay ratings on accessory and lighting circuits
Pre-terminated leads remove hand-crimping at the relay
Socket body holds the relay against vehicle vibration

Samples ship within 3 days of confirmation. Bulk lead time is typically 7 to 12 days.

Problems It Solves

Switches carrying load current overheat and fail
Loose spade terminals on bare relays back off under vibration
Hand-wired relay circuits are inconsistent between vehicles

Who It Is For

Vehicle accessory manufacturers
Lighting and off-road equipment brands
Workshops building accessory circuits

Application Scenarios

Auxiliary lighting circuits
Fuel pump and fan control on vehicle builds
Accessory power switching on trucks and off-road vehicles

Technical Features

5 pin relay socket
12V 40A circuit rating
Pre-terminated leads
Changeover contact wiring

Specifications

Relay Type	5 pin
Voltage	12V
Current	40A
Application	Automotive accessory switching

Values shown are the standard build. Connector family, conductor gauge, circuit count and finished length are all build options.

Quality Control And Certification

Continuity And Circuit Verification. Verifies the physical arrangement sequence of the harness terminals and the circuit topology between them
Circuit Configuration Verification. Confirms that a complete, uninterrupted current flow path exists within each circuit
Terminal Retention Strength Test. Measures the mechanical reliability of the connection between the terminal and the wire
Ingress Protection Rating Test. Evaluates the dust and water resistance sealing performance of harness connectors

The company is certified to IATF 16949 and UL standards. Samples are confirmed prior to trial or mass production, and the approved sample is the reference for every repeat order.

Customization Options

Connector family and terminal type to your part numbers
Conductor gauge selected from the current per circuit
Finished length and breakout positions to your drawing
Jacket colour, marking and labelling to your scheme
Packing to your instruction, PE bag and carton as standard

Compared With The Alternatives

Bare relays with loose terminals

A moulded socket keeps all five terminals seated under vibration

4 pin relay harnesses

The fifth pin provides a normally closed circuit for changeover control

Use Guide

Fuse the relay feed close to the battery
Mount the relay with the terminals facing down so water cannot pool
Confirm the coil and load circuits before connecting the accessory

Other Assemblies In Automotive Wiring Harness

40A Fuse Box And 12V Relay Fog Light Wiring Harness Kit - Garfour view 1

Automotive Wiring Harness 40A Fuse Box And 12V Relay Fog Light Wiring Harness KitFused relay harness kit for automotive fog and LED light installs View Specifications

Car Audio Wiring Harness For DEH-P80MP Head Units - Garfour view 1

Automotive Wiring Harness Car Audio Wiring Harness For DEH-P80MP Head UnitsHead unit connection harness for DEH-P80MP audio and video wiring View Specifications

20A Alligator Clip Jumper Battery Charger Harness - Garfour view 1

Automotive Wiring Harness 20A Alligator Clip Jumper Battery Charger HarnessBattery charging harness with 20A alligator clips for boosters and jump starters View Specifications

OBD2 Diagnostic Cable Harness For GPS Tracking Devices - Garfour view 1

Automotive Wiring Harness OBD2 Diagnostic Cable Harness For GPS Tracking DevicesOvermoulded OBD II 16 pin harness for vehicle GPS navigation and tracking View Specifications

Guides That Cover This Build

Buying Guide

How To Specify A Custom Wire Harness For Quotation

What a harness manufacturer actually needs from you before a quotation means anything, and what happens when those details are missing.

Process Guide

Four Tests That Decide Whether A Wire Harness Is Sound

Continuity, circuit configuration, terminal retention and ingress protection, and what each one catches that the others do not.

Buying Guide

What To Check Before Ordering A Standalone Engine Harness

Crank reluctor generation, throttle type and transmission control decide whether a standalone loom will run your engine at all.

12V 40A 5 Pin Automotive Relay Socket Harness FAQ

Is the relay supplied with the socket?

Tell us whether you need relay included or socket only and we quote accordingly.

Can it be built for 24V systems?

Yes. Send the system voltage and load current with your enquiry.

Which markets do you already supply?

We take on client projects each year from the United States, the United Kingdom, Germany, France, Mexico and Japan, with the United States as our core market.

Do you accept small batch orders of 12V 40A 5 Pin Automotive Relay Socket Harness?

Yes. Small batch orders are accepted and quoted case by case. Our production lines are set up for small batch, multiple variety work rather than only long runs.

What quality system do you work to?

Dongguan JiaFu Automobile Accessories Co., Ltd is certified to IATF 16949 and UL standards, and harness testing covers continuity, circuit configuration, terminal retention strength and ingress protection rating.

Get A Price On 12V 40A 5 Pin Automotive Relay Socket Harness

Tell us the quantity, the finished length and any change to the connector set. We come back with the price, the lead time and a sample plan.

Chat On WhatsApp Email Our Engineers