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For Reference Only - Some Applications May Vary.

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  1. Relay - Micro - 280 CB13350 - TRP
    Price $24.56
    Ships Today
  2. Relay CB12650 - TRP
    TRP Relay CB12650
    Part# CB12650 OLD# K301-179
    Price $6.77
    Ships Today
  3. Power Relay, 300A 1000390653BSM - Paccar
    Price $598.24
    Ships within 72 hours
  4. Relay - 12V, Micro, Single Pole Double Throw 23-13265-011 - Freightliner
    Price $7.48
    Ships within 72 hours
  5. Relay - 5 Prong Shroud W/BRKT CB12450 - Paccar
    Price $14.22
    Ships within 72 hours
  6. Relay - Starter 12-8582 - Mitsubishi Electric
    Price $97.14
    Ships within 72 hours
  7. Relay 0332002156 - Paccar
    Paccar Relay 0332002156
    Part# 0332002156 OLD# -
    Price $68.98
    Ships within 72 hours
  8. Relay - High Current, 12V, With H/W Kit 1 684-1241-212 - Trombetta Corporation
    Price $19.55
    Ships within 72 hours
  9. Relay - SPST ISO 70amp NO, Sealed CB12755 - Paccar
    Price $17.45
    Ships within 72 hours
  10. Battery Disconnect Relay, 200 amp 0000507012 - Paccar
    Price $360.83
    Ships within 72 hours
  11. Relay - Micro ISO CB12255 - Paccar
    Paccar Relay - Micro ISO CB12255
    Part# CB12255 OLD# 16-08700-004
    Price $17.93
    Ships within 72 hours
  12. Relay - Unsealed w/o Bracket 1745069PAC - Paccar
    Price $17.66
    Ships within 72 hours
  13. Relay - Mini 24V/20A 1705985PAC - Paccar
    Price $10.89
    Ships within 72 hours
  14. Relay - Single Pole Double Throw 16-08700-007 - Peterbilt
    Price $31.92
    Ships within 3 to 6 weeks
  15. Signal-Stat, 40 AMP, 12V, Heavy Duty Relay 192 - Truck Lite
    Price $5.49
    Ships within 3 to 6 weeks
  16. Relay - 12V KWP CB10050 - TRP
    TRP Relay - 12V KWP CB10050
    Part# CB10050 OLD# -
    Price $20.45
    Ships within 3 to 6 weeks
  17. Relay - 12 Volt 30 Amp CB11150 - TRP
    Price $10.06
    Ships within 3 to 6 weeks
17 Items
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Relays – A Crucial Aspect of Truck Circuitry

In the intricate maze of wires and components that form the electrical system of a truck, relays play a pivotal role. They might be small, but their importance in ensuring a truck's numerous electrical functions work flawlessly cannot be understated.

What are Relays?

At their core, relays are essentially electrically operated switches. They ensure that when a low-power signal is received, a separate, high-power circuit is activated. By doing so, they safeguard sensitive components from potential damage and ensure seamless operation of heavier electrical loads.

The Significance in Trucks

The role of relays in trucks is multifaceted. They:

  • Protect sensitive equipment from surges.
  • Allow the operation of heavy-duty components, such as headlights or starter motors, from low-power switches.
  • Contribute to safety by ensuring components like brake lights work as intended.

Choosing the Right Relay

When it comes to selecting the ideal relay for a truck, there are several considerations:

  • Voltage Rating: Ensure the relay matches the truck's electrical system.
  • Load Capacity: How much current will the relay need to handle?
  • Type of Relay: From solid-state relays to electromagnetic ones, the choice depends on the specific application.

With the multitude of relays available, making an informed decision is vital to ensure the longevity and functionality of the truck's electrical components.

Your Relay Destination - Big Rig Shop

Understanding the crucial role relays play, the Big Rig shop has curated a wide assortment tailored to fit the diverse needs of trucking professionals. Whether you're in search of a specific type or need guidance, this collection is designed to cater to every truck's relay requirement.

In the grand scheme of things, relays might seem like minor components. However, their role in a truck's electrical system is both vital and irreplaceable. A quality relay ensures that everything from your headlights to your starter motor works optimally, allowing you to focus on the road ahead. It's the small pieces that make the big picture complete.