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Suitable for Nilight LED light bar wiring harness kit. Premium quality: durable relay and harness socket with 5 wires; Made by high-grade materials to ensure superior quality and long lifespan.



High quality: the jd2912-1h-12vdc equip with 4 pin durable terminal, high quality nylon flame-retardant shell. Easy to fix: the 4 pin relay with simple structure, and install the new relay directly and test, save your time.
Hundreds of uses include trunk release, polarity change, control motor/other electronic equipment, conversion of low current output to high current, and also for automobile control, alarm, addition of ignition/accessory output, headlight, electronic equipment, etc. Moreover, the pure copper coil adopts international standard turns, more reliable than other materials.


Black - ground 85, white - trigger 86, red - VDC 30, Blue - Output N/O 87. No need of a separate fuse holder, saving space and money. Wide application - widely used in car keys power control, trunk release, polarity change, change a low current output to high current, power door lock/actuator control, over-load protection, add ignition/accessory outputs, control motors/other electronics etc.
Bosch style 4-pin spsT Single Pole Single Throw Relay. Easy wiring - the relay sockets come with color-labeled wires for load/accessories convenient wiring. Mounting design feature - the interlocking mounting design of unique male and female slot on each socket edge, connect relays together and manage cables easily, offering clean and neat installation.
1. iRhapsody
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Bosch Style SPST Automotive Relay, IRHAPSODY 4 Pin 40/30 AMP 12 V DC Relay and Harness, Heavy Duty 12 AWG Tinned Copper Wires
#adiRhapsody #ad - Nominal coil voltage: 12v dc; coil power: 1. 8w; coil resistance: 80Ω. 12 awg tinned copper wires for Pin 30, Pin 87. 40 amp / 30 amp High switching capability.More information #ad
Must operate voltage: 6~8v dc; must release voltage: 06~3. 6v dc; maximum applied Voltage: 15. 6v dc. 16 awg tinned copper wires for Pin 85, Pin 86. Length: 5. 1in. Length: 5. 1in. 12-volt relay max 14-volt.Brand | iRhapsody #ad |
Manufacturer | IRHAPSODY #ad |
Part Number | 4PIN12VRelay06P |
Warranty | 1 YEAR |
More information #ad
2. EHDIS
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Auto Switches & Starters,Pack of 2, EHDIS Car Relay 4 Pin 12v 40amp Spst Model No.: JD2912-1H-12VDC 40A 14VDC
#adEHDIS #ad - High 40a coil capacity- able to handle those high current applications with ease. Use optional relay Harness, or female Crimp Connectors. Mechanical life of 10, 000+ cycles. Brand new heavy duty 4-prongs SPST relays. Package include: 2 x 40a 4-Pin 12V Vehicle Relays.More information #ad
Brand | EHDIS #ad |
Manufacturer | Ehdis #ad |
Height | 0.98 Inches |
Length | 1.06 Inches |
Weight | 0.09 Pounds |
Width | 1.06 Inches |
Part Number | 2C05-12V |
More information #ad
3. iRhapsody
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Heavy Duty 12 AWG Tinned Copper Wires, 1 Pack SPST Bosch Style Automotive Relay, 4-PIN 40/30 AMP 12 V DC Waterproof Relay with Harness
#adiRhapsody #ad - Nominal coil voltage: 12 v dc; coil power: 1. 8 w; coil resistance: 80 Ω; must operate voltage: 6~8 V DC; Must Release Voltage: 06~3. 6 v dc; maximum applied Voltage: 15. 6 v dc. Length: 5.More information #ad
1in. 40 amp / 30 amp High switching capability. Excellent waterproof and dustproof ability, high quality in any weather conditions. 12 awg tinned copper wires for Pin 30, Pin 87. 16 awg tinned copper wires for Pin 85, Pin 86. Length: 5. 1in. 12v dc waterproof 4 wire relay max 14v.Brand | iRhapsody #ad |
Manufacturer | IRHAPSODY #ad |
Part Number | 4PIN12VRelay40AWF1P |
Warranty | 1 year |
More information #ad
4. ONLINE LED STORE
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ONLINE LED STORE 6 Pack 4-Pin 12V Bosch Style Fused Relay Switch Kit Interlocking Harness Socket Holder 14 AWG Hot Wires SPST 30 Amp 12 Volt Automotive relays with Fuse for Auto Cars
#adONLINE LED STORE #ad - 12vdc 14v max and 30a high Switching Capability. Wire specifications: black - ground 85, white - trigger 86, Red - VDC 30, Blue - Output N/O 87.More information #ad
Bosch style 4-pin spst Single Pole Single Throw Relay. Built in fuse socket with included 30A blade fuse with heavy duty 14AWG wires for main contact. Set includes 6 relays, 6 relay harnesses, and 6 blade fuses.Brand | ONLINE LED STORE #ad |
Manufacturer | ONLINE LED STORE #ad |
Height | 2 Inches |
Length | 6.5 Inches |
Weight | 0.8 Pounds |
Width | 5.62 Inches |
Part Number | PSZACCEPS179R |
Model | PSZACCEPS179R |
More information #ad
5. Nilight
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Nilight 50003R Automotive Set 5-Pin 30/40A 12V SPDT with Interlocking Relay Socket and Wiring Harness-5 Pack, 2 Years Warranty
#adNilight #ad - Package include: 5 x relay and 5 x relay socket with wires. Fit type: Universal fit. High switching capability: normally open 40a/14v DC and normally close 30A/14V DC.Suitable for Nilight LED light bar wiring harness kit. Premium quality: durable relay and harness socket with 5 wires; Made by high-grade materials to ensure superior quality and long lifespan.
More information #ad
Male-female slot design: unique male-female slot design, easy to connect the relay with harness socket, clean and neat after installation. Easy wiring: the relay sockets come with different colors for loads/accessories, simple and convenient wiring.Brand | Nilight #ad |
Manufacturer | Nilight #ad |
Height | 5 Inches |
Length | 5 Inches |
Weight | 0.5 Pounds |
Width | 2 Inches |
Part Number | NI-RE05 |
Model | 50003R |
Warranty | 2 Years Warranty |
More information #ad
6. EHDIS
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EHDIS 4-Pin Relay with Harness Car Truck Motor Heavy Duty 80A 12V On/Off Normally Open SPST Relay Socket Plug 4 Wire Automotive Relay Model JD2912-1H-12VDC 80A 14VDC,Pack of 2
#adEHDIS #ad - Country of manufacture: China; Material: Plastic, Metal, Copper. Contact type: spst normal Open; Pin Number: 4 Pin. Package content: 2 x model: jd-2912 Car Relay; 2 x 4 pin relay socket with 4 wires.More information #ad
Coil: 12vdc 80 amp; body size: 28 x 28 x25mm/1. 1" x 1. 2" x 1"l*w*H. Relay size: 33 x 28 x 52mm/1. 3" x 1. 1" x 2"l*w*h; fixing hole dia: 6. 5mm/2. 5"; socket size: 35 x 34 x 18 mm.Brand | EHDIS #ad |
Manufacturer | EHDIS #ad |
Part Number | 2C03S-12V |
More information #ad
7. ESUPPORT
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ESUPPORT Car Relay 12V 40A SPST 4Pin Switch Automotive Pack of 5
#adESUPPORT #ad - Mechanical life of 100, 000, life expectancy Mechanical: 10, 000+ cycles, 000 Operations. Brand new heavy duty SPST relays. 12 volt 40 amp 4-prong relays. Widely used in car keys power control, trunk release, over-load protection, power door lock/actuator control, control motors/other electronics etc.More information #ad
High 40a coil capacity- able to handle those high current applications with ease.Brand | ESUPPORT #ad |
Manufacturer | ESUPPORT #ad |
Part Number | CXR40A04B |
More information #ad
8. Generic
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Automotive Car Relay 4 Pin 12v 40amp JD2912-1H-12VDC 40A 14VDC SPST Relays Auto Switches & Starters for Car Vehicle Truck Boat
#adGeneric #ad - Part number: jd2912-1h-12vdc 40A 14VDC. Compatibility: it is widely used in remote control, horn, communication, automatic control system, power door lock/actuator control, etc. Just remove the broken relay from your car, easy to install, plug and play, perfect replacement for your original one, then the installation is complete.High quality: the jd2912-1h-12vdc equip with 4 pin durable terminal, high quality nylon flame-retardant shell. Easy to fix: the 4 pin relay with simple structure, and install the new relay directly and test, save your time.
More information #ad
Durable and safety: this spst relay will eliminate a high voltage drop in the wire, so it allows your components to work properly; and the nylon shell with high mechanical strength, good toughness, high tensile and compressive strength, corrosion resistance and flame retardant, which ensure a long time use. Hundreds of uses include trunk release, polarity change, control motor/other electronic equipment, conversion of low current output to high current, and also for automobile control, alarm, addition of ignition/accessory output, headlight, electronic equipment, etc. Moreover, the pure copper coil adopts international standard turns, more reliable than other materials.
Brand | Generic #ad |
Manufacturer | WOTI #ad |
Height | 2.09 Inches |
Length | 1.1 Inches |
Width | 1.26 Inches |
Part Number | JD2912-1H-12VDC 40A 14VDC |
More information #ad
9. EHDIS
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Ehdis 4-Pin Relay 12V 80A Automotive Car Relay On/Off Normally Open Car Truck Boat SPST Relays High Power Model JD2912-1H-12VDC 80A 14VDC 2 Pack
#adEHDIS #ad - Car relay part number : jd2912-1h-12vdc 80A 14VDC Car Relay. Contact type: spst normal Open; Pin Number: 4 Pin. Coil: 12vdc 80a; body size: 28 x 28 x25mm/1. 1" x 1. 2" x 1"l*w*H. This kit can be used to install electric cooling fans, Electric water Pumps, Trunk solenoids, Electric fuel pumps, Shaved door handles solenoids, Horns.More information #ad
These are heavy duty 80a relays. Using this kit will eliminate a high voltage drop in the wire, so it allows your components to work properly.Brand | EHDIS #ad |
Manufacturer | EHDIS #ad |
Height | 0.98 Inches |
Length | 1.1 Inches |
Weight | 0.09 Pounds |
Width | 1.1 Inches |
Part Number | 2C03-12V |
More information #ad
10. Nilight
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Nilight 50023R 5 Pack 30A Fuse Relay car Truck Socket kit-30A Switch Harness Set-12V DC 4-Pin SPST Automotive 14 AWG Hot Wires-Auto Switches & Starters Set,2 Years Warranty
#adNilight #ad - Upgraded version - automotive relays built in fuse socket included 30a blade fuses with heavy duty 14AWG wires for main contact. Package includes: 5 relays, 5 relay harnesses, and 5x30A blade fuses.Black - ground 85, white - trigger 86, red - VDC 30, Blue - Output N/O 87. No need of a separate fuse holder, saving space and money. Wide application - widely used in car keys power control, trunk release, polarity change, change a low current output to high current, power door lock/actuator control, over-load protection, add ignition/accessory outputs, control motors/other electronics etc.
More information #ad
Bosch style 4-pin spsT Single Pole Single Throw Relay. Easy wiring - the relay sockets come with color-labeled wires for load/accessories convenient wiring. Mounting design feature - the interlocking mounting design of unique male and female slot on each socket edge, connect relays together and manage cables easily, offering clean and neat installation.
Brand | Nilight #ad |
Manufacturer | Nilight #ad |
Height | 2 Inches |
Length | 8 Inches |
Weight | 0.72 Pounds |
Width | 6 Inches |
Part Number | 50023R |
Model | 50023R |
Warranty | 2 Years Warranty |
More information #ad