Custom Wiring Parts

Morimoto DIY Relay Kit


PART #: 1 x WP310

[ In Stock: 0 pieces ]


Product Details

DIY: These high quality 4-pin automotive relays are great for spares or for those looking to build their own relay harness. Don't bother spending two or three times as much for the same thing, or getting less for the same amount of money. Buy Morimoto.

Protected:from the elements with 3 layers of silicone seals! Don't trust unsealed relays under the hood that are prone to fail due to moisture. These things are basically impenetrable both rain or shine.

Industry Standard: layout includes the switch (85), ground (86), power input (87), and power output (30)

Internally: they are rated to pass 12V at up to 40 Amps through their high quality copper coils. Integrated flyback diode prevents potential back-feeding.

Standard: Equipment on the HD Relay Harness by Morimoto, you can now build your own harnesses like the pros.

Optional: brackets allow you to combine two relays together on a single mount for a clean setup that designed around more than one relay.

Trusted: For more than a decade, we've worked hard to earn our killer reputation. Car guys world-wide know that TRS carries the internet's best selection of high performance automotive and powersport lighting products at the best prices, and we've got the best, most knowledgeable team of real enthusiasts to help back it up. If we sell it, then you bet we've put it to the test on our own cars, trucks, and bikes. Need a recommendation on parts for your project? Got a tech question? Wholesale inquiry? Contact us!

Product Specs

  • Compatibility



  • Tech Specs

  • Capacity: 40A @ 12V DC

  • Power Capacity: 600w

  • Wire Needed: 14-16AWG

  • Relay Type: 4 Pin normally open

Product Reviews

5 out of 5 stars

1 Review   Write a Review

5 out of 5 stars

The Highest quality Relay Harness I have ever seen!


These relays came with the 9006 and 9005 HD Wiring harnesses that I purchased for my truck. I'm very impressed with them. They are very high quality. The relay feels very tough and the seals seal up tight! If you shop around you will not find a nicer automotive relay out there. I will be ordering these for other automotive projects in the future!