What is the purpose of relays on Nissan Frontier's electrical system?

Several electrical accessories in the vehicle, such as the fuel injection system, horns, starter, and fog lamps use relays to transmit the electrical signal to the component. Relays use a low-current circuit (the control circuit) to open and close a high-current circuit (the power circuit). If the relay is defective, that component will not operate properly. Most relays are mounted in the engine compartment fuse/relay boxes, with some specialized relays located above the interior fuse box. The covers of the engine compartment relay boxes have a printed key to identify the relays. There are also several relays located above the interior fuse box. If a faulty relay is suspected, it can be removed and tested using the procedure below or by a dealer service department or a repair shop. Defective relays must be replaced as a unit. If you can't determine the correct connection from the wiring diagrams, however, you may be able to determine the test connections from the information that follows. There are six basic types of relays used on these models. Some are normally open type and some normally closed, while others include a circuit of each type. On most relays, two of the terminals are the relay control circuit. The other terminals are the power circuit. Some relays may be marked as an aid to help you determine which terminals are the control circuit and which are the power circuit. To test a relay connect an ohmmeter across the two terminals of the power circuit, continuity should not be indicated. Now connect a fused jumper wire between one of the two control circuit terminals and the positive battery terminal. Connect another jumper wire between the other control circuit terminal and ground. When the connections are made, the relay should click and continuity should be indicated on the meter. On some relays, polarity may be critical, so, if the relay doesn't click, try swapping the jumper wires on the control circuit terminals. If the relay fails the above test, replace it.

Genuine Nissan Frontier Relay

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48 Relays found

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Nissan Frontier Trailer Tow Harness Relay - Required for Trailer Tow Harness 999T8-XZ000
Part Number: 25230-79917
$7.83 MSRP: $11.38
You Save: $3.55 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Relay-Light; Horn Relay, Power Relay, Relay, Window Relay
- Replaces: 25230-79944, 25230-79945, 25230-79915, 25320-79915, 25230-79965
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2002-2024 Nissan Frontier | LE, Off-Road, PRO-4X, PRO-X, S, SC, SE, SL, SV, XE | 4 Cyl 2.4L, 4 Cyl 2.5L, 6 Cyl 3.3L, 6 Cyl 3.8 L GAS, 6 Cyl 4.0L | KA24DE, QR25DE, VG33E, VQ40DE
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Nissan Frontier Relay
Part Number: 25230-79915
$7.83 MSRP: $11.38
You Save: $3.55 (32%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Relay-Starter
- Replaced by: 25230-79917
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2002-2004 Nissan Frontier | SC, SE, XE | 4 Cyl 2.4L, 6 Cyl 3.3L | KA24DE, VG33E
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Nissan Frontier Relay
Part Number: 25230-9B900
$20.74 MSRP: $30.16
You Save: $9.42 (32%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Relay-EGI
- Replaced by: 25230-79981
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 1998-2004 Nissan Frontier | SC, SE, STD, XE | 4 Cyl 2.4L, 6 Cyl 3.3L | KA24DE, VG33E
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Nissan Frontier Relay
Part Number: 25230-7996A
$29.04 MSRP: $42.24
You Save: $13.20 (32%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Relay-Light
- Position: Passenger Side
- Replaces: 25230-79964, 25230-79963, 25230-C9973, 25230-C9963
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 1998-2024 Nissan Frontier | LE, Off-Road, PRO-4X, PRO-X, S, SC, SE, SL, SV, XE | 4 Cyl 2.4L, 4 Cyl 2.5L, 6 Cyl 3.3L, 6 Cyl 3.8 L GAS, 6 Cyl 4.0L | KA24DE, QR25DE, VG33E, VQ40DE
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Nissan Frontier Relay-Horn
Part Number: 25630-79960
$15.03 MSRP: $24.18
You Save: $9.15 (38%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Horn Relay, Relay
- Replaces: 26320-C9961, 26320-C9960, 25630-C9961, 26320-C9970, 25630-C9960, 25630-C9962
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 1998-2024 Nissan Frontier | LE, Off-Road, PRO-4X, PRO-X, S, SC, SE, SL, STD, SV, XE | 4 Cyl 2.4L, 4 Cyl 2.5L, 6 Cyl 3.3L, 6 Cyl 3.8 L GAS, 6 Cyl 4.0L | KA24DE, QR25DE, VG33E, VQ40DE
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Nissan Frontier Relay
Part Number: 25230-79918
$30.49 MSRP: $44.35
You Save: $13.86 (32%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Relay-Ignition
- Replaces: 25230-79966, 25230-79916
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2005-2019 Nissan Frontier | Off-Road, PRO-4X, S, SE, SL, SV | 4 Cyl 2.5L, 6 Cyl 4.0L | QR25DE, VQ40DE
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Nissan Frontier Relay
Part Number: 25230-9B905
$32.14 MSRP: $46.75
You Save: $14.61 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Relay-Antiskid
- Replaced by: 25230-79982
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 1998-2010 Nissan Frontier | LE, Off-Road, SC, SE, SL, SV, XE | 4 Cyl 2.4L, 6 Cyl 3.3L, 6 Cyl 4.0L | KA24DE, VG33E, VQ40DE
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Nissan Frontier Relay
Part Number: 25230-79964
$29.04 MSRP: $42.24
You Save: $13.20 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaced by: 25230-7996A
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 1998-2004 Nissan Frontier | SC, SE, XE | 4 Cyl 2.4L, 6 Cyl 3.3L | KA24DE, VG33E
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Nissan Frontier Breaker Circuit
Part Number: 24330-C9960
$27.50 MSRP: $40.00
You Save: $12.50 (32%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Circuit Breaker Assy-Power Window; Breaker Assembly, Relay, Resistor, Window Relay
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 1998-2003 Nissan Frontier | SC, SE, STD, XE | 4 Cyl 2.4L, 6 Cyl 3.3L | KA24DE, VG33E
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Nissan Frontier Relay
Part Number: 25230-79945
$7.83 MSRP: $11.38
You Save: $3.55 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaced by: 25230-79917
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2002-2004 Nissan Frontier | SC, SE, XE | 4 Cyl 2.4L, 6 Cyl 3.3L | KA24DE, VG33E
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Nissan Frontier Relay
Part Number: 25230-C9963
$29.04 MSRP: $42.24
You Save: $13.20 (32%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Replaced by: 25230-7996A
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 1998-1999 Nissan Frontier | SE, XE | 4 Cyl 2.4L | KA24DE
View related parts
Nissan Frontier Relay
Part Number: 25230-79963
$29.04 MSRP: $42.24
You Save: $13.20 (32%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Relay-Light
- Replaced by: 25230-7996A
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2005-2008 Nissan Frontier | LE, Off-Road, SE, XE | 4 Cyl 2.5L, 6 Cyl 4.0L | QR25DE, VQ40DE
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Nissan Frontier Harness Assembly-EGI
Part Number: 24011-EA271
$668.00 MSRP: $971.64
You Save: $303.64 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Harness-EGI; Engine Harness
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2005-2007 Nissan Frontier | LE, Off-Road, SE | 6 Cyl 4.0L | VQ40DE
View related parts
Nissan Frontier Relay
Part Number: 25230-79982
$32.14 MSRP: $46.75
You Save: $14.61 (32%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Relay-Antiskid; Intermittent Relay
- Replaces: 25230-79972, 25230-79962, 25230-9B905
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 1998-2019 Nissan Frontier | LE, Off-Road, PRO-4X, S, SC, SE, SL, SV, XE | 4 Cyl 2.4L, 6 Cyl 3.3L, 6 Cyl 4.0L | KA24DE, VG33E, VQ40DE
View related parts
Nissan Frontier Harness Assembly-EGI
Part Number: 24011-EA270
$594.63 MSRP: $864.91
You Save: $270.28 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Harness-EGI; Engine Harness
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2005-2007 Nissan Frontier | LE, Off-Road, SE | 6 Cyl 4.0L | VQ40DE
View related parts
Nissan Frontier Harness Assembly-EGI
Part Number: 24011-ZP90B
$587.58 MSRP: $854.65
You Save: $267.07 (32%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Harness-EGI; Engine Harness
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2006-2011 Nissan Frontier | LE, Off-Road, SE, SL, SV | 6 Cyl 4.0L | VQ40DE
View related parts
Nissan Frontier Harness Assembly-EGI
Part Number: 24011-9BA0B
$516.71 MSRP: $751.58
You Save: $234.87 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Harness-EGI; Engine Harness
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2010-2013 Nissan Frontier | LE, Off-Road, PRO-4X, S, SE, SL, SV | 6 Cyl 4.0L | VQ40DE
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Nissan Frontier Harness Assembly-EGI
Part Number: 24011-ZP50B
$532.95 MSRP: $775.20
You Save: $242.25 (32%)
ADD TO CART
Limited Availability
Product Specifications
- Other Name: Harness-EGI; Engine Harness
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2006-2011 Nissan Frontier | LE, Off-Road, SE, SL, SV | 6 Cyl 4.0L | VQ40DE
View related parts
Nissan Frontier Harness-EGI
Part Number: 24011-9BF6A
$292.23 MSRP: $425.05
You Save: $132.82 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Engine Harness
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2012-2018 Nissan Frontier | S, SV | 4 Cyl 2.5L | QR25DE
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Nissan Frontier Harness-EGI
Part Number: 24011-9BF0B
$378.75 MSRP: $550.91
You Save: $172.16 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Engine Harness
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2012-2015 Nissan Frontier | PRO-4X, S, SL, SV | 6 Cyl 4.0L | VQ40DE

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Nissan Frontier Relay

If you need any OEM Nissan Frontier Relay, feel free to choose them out of our huge selection of genuine Nissan Frontier Relay. All our parts are offered at unbeatable prices and are supported by the manufacturer's warranty. In addition, we offer quick shipping to have your parts delivered to your door step in a matter of days.

Nissan Frontier Relay Parts Questions & Experts Answers

Relay-Horn
25630-79960
Q: What is the purpose of relays on Nissan Frontier's electrical system?
A: Several electrical accessories in the vehicle, such as the fuel injection system, Horns, starter, and fog lamps use relays to transmit the electrical signal to the component. Relays use a low-current circuit (the control circuit) to open and close a high-current circuit (the power circuit). If the relay is defective, that component will not operate properly. Most relays are mounted in the engine compartment fuse/relay boxes, with some specialized relays located above the interior fuse box. The covers of the engine compartment relay boxes have a printed key to identify the relays. There are also several relays located above the interior fuse box. If a faulty relay is suspected, it can be removed and tested using the procedure below or by a dealer service department or a repair shop. Defective relays must be replaced as a unit. If you can't determine the correct connection from the wiring diagrams, however, you may be able to determine the test connections from the information that follows. There are six basic types of relays used on these models. Some are normally open type and some normally closed, while others include a circuit of each type. On most relays, two of the terminals are the relay control circuit. The other terminals are the power circuit. Some relays may be marked as an aid to help you determine which terminals are the control circuit and which are the power circuit. To test a relay connect an ohmmeter across the two terminals of the power circuit, continuity should not be indicated. Now connect a fused jumper wire between one of the two control circuit terminals and the positive battery terminal. Connect another jumper wire between the other control circuit terminal and ground. When the connections are made, the relay should click and continuity should be indicated on the meter. On some relays, polarity may be critical, so, if the relay doesn't click, try swapping the jumper wires on the control circuit terminals. If the relay fails the above test, replace it.