Collection: Relay Harnesses, Connectors & Terminals

Explore our range of relay harnesses, connectors, and terminals designed for automotive and marine electrical system upgrades and repairs. This collection includes pre-wired relay sockets, high-amp terminals, pigtail connectors, and mounting bases compatible with common 4-pin and 5-pin relays. Ideal for headlight conversions, fan control, fuel pump circuits, and custom wiring setups, these components offer direct fit compatibility and OEM-grade durability in high-vibration environments.

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14 products

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14 products

  • 16 Gauge Plug & Relay Harness - 6 Inch or 12 Inch

    Volume Pricing 10+ pieces @ $1.50 each

    Regular price $8.49 USD
    Sale price $8.49 USD Regular price
  • 1/4" Female Relay Terminals - Locking Tang - 100 Pack

    1/4" female relay terminals with locking tang are designed for secure engagement in relay blocks, fuse panels, and...

    Regular price $5.99 USD
    Sale price $5.99 USD Regular price
  • Interconnection Relay Socket 14 AWG

    Volume Pricing 10+ pieces @ $2.50 each

    Regular price $3.99 USD
    Sale price $3.99 USD Regular price
  • 5 pin Relay Socket w/ terminals

    5 Pin Relay Socket w/ 5 Terminals 100 kits @ $1.25

    Regular price $2.49 USD
    Sale price $2.49 USD Regular price
  • 12V Waterproof 5-Pin Relay Switch with Wire Harness - 40A IP67 Universal

    This 12V 5-pin relay switch with wire harness is built for high-performance, weather-resistant electrical control in automotive, marine,...

    Regular price $15.99 USD
    Sale price $15.99 USD Regular price
  • Interconnecting Relay Socket "Housing Only" No Connectors

    Interconnecting Relay Socket "Housing Only" No Connectors (Compatable with BU340, and RH2-14)

    Regular price $0.99 USD
    Sale price $0.99 USD Regular price
  • Interconnecting Relay Socket w/ Mounting Hole "Housing Only"

    Volume Pricing 10-99 pieces @ $.89 each 100 + pieces @ $.79 each No Connectors (only connects with...

    Regular price $2.70 USD
    Sale price $2.70 USD Regular price
  • Dual Relay Plug & Harness 30a or 40a relays

    Volume Pricing 10+ pieces @ $3.75 each

    Regular price $4.25 USD
    Sale price $4.25 USD Regular price
  • The Beuler 40/60 Amp 5-Pin Waterproof Relay is designed for high-performance automotive and marine electrical systems. This relay...

    Regular price $7.49 USD
    Sale price $7.49 USD Regular price
  • High heat Ceramic 4/5 pin relay harness Rated at 300 dg.

    High heat Ceramic 4/5 pin relay harness Rated at 300 dg.

    Regular price $4.95 USD
    Sale price $4.95 USD Regular price
  • This 5-pin Beuler relay and socket harness set delivers reliable switching performance in demanding environments. Designed with a...

    Regular price $12.95 USD
    Sale price $12.95 USD Regular price
  • 12 VDC 5 Pin Relay Socket With Diode

    Volume Pricing 10+ pieces @ $1.95 each

    Regular price $4.99 USD
    Sale price $4.99 USD Regular price
  • Mini Relay Prewired 10/20 A with 18" Leads

    Mini Relay Prewired 10/20 Ampwith 18" Leads

    Regular price $9.49 USD
    Sale price $9.49 USD Regular price
  • Interconnecting 5 Pin 12V Relay Switch 40 Amp Fuse W/ 12" Inch 5 Wire Harness

    30/40 Amp Fuse 5 Pin with 5 Wire 12" Inch Leads. Can be connected to other Wire Harness...

    Regular price $10.49 USD
    Sale price $10.49 USD Regular price