SKU: 3229676670

Automotive Relay Tester and Bypass Jumper Set

Sale price$34.19 Regular price$37.99
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 21 - Jul 26

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Description

Automotive Relay Tester and Bypass Jumper SetFEATURES INDEPENDENT CIRCUIT CONTROL Take charge of the fuel pump circuit, bypassing the vehicle's key on system. This allows for precise and simplified fuel injection pressure testing without needing to turn the ignition. INTEGRATED AMP LOOP Features a convenient red wire loop designed for easy current monitoring. Simply attach a clamp on ammeter or lab scope to accurately diagnose parasitic draws or excessive current consumption in the circuit. PLUG

FEATURES

INDEPENDENT CIRCUIT CONTROL - Take charge of the fuel pump circuit, bypassing the vehicle's key-on system. This allows for precise and simplified fuel injection pressure testing without needing to turn the ignition.

INTEGRATED AMP LOOP - Features a convenient red wire loop designed for easy current monitoring. Simply attach a clamp-on ammeter or lab scope to accurately diagnose parasitic draws or excessive current consumption in the circuit.

PLUG-AND-PLAY OPERATION - Installation is effortless. Just remove the original relay and plug this bypass switch directly into the socket. You gain immediate manual control over the circuit with a simple flip of the switch.

ROBUST POWER HANDLING - Engineered to handle up to 20 amps of continuous current and a 30-amp surge at 12V. This makes it perfectly suitable for running various automotive DC motors and high-load components safely.

VERSATILE DIAGNOSTIC TOOL - This comprehensive kit is not just for fuel pumps. Use it to test and operate cooling fans, window motors, headlight switches, A/C compressors, and many other relay-controlled automotive systems.

SPEC

Color: Black

Size: 8.99 cm x 6.96 cm x 11.96 cm (3.54 in x 2.74 in x 4.71 in)

Weight: 132 g (4.66 oz)

Working Range: Up to 20A continuous, 30A surge (12V)

PACKAGE INCLUDES

6 x Relay Bypass Switches

NOTES

Please verify the relay type and size in your vehicle's fuse box before purchasing to ensure compatibility.

Do not leave the bypass switch installed permanently. It is intended for diagnostic and testing purposes only.

Ensure the vehicle's ignition is off before installing or removing the bypass switch to prevent electrical damage.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 3229676670

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Mar Gee
San Leandro, US
★★★★★ 5
Style and comfort
Size: Medium, Color: Black
Exactly what I was looking for. Style and sock thickness and comfort.
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Reviewed in the United States on December 14, 2025
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Amazon Customer
Lexington, US
★★★★★ 5
Comfortable
Size: Medium, Color: Blue
So comfortable! They stay up perfectly love love love
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Reviewed in the United States on December 7, 2025
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LC
Omaha, US
★★★★★ 5
LOVE THEM!!
Size: Small, Color: (001) Black / Black / Castlerock
LOVE! These socks are so comfortable! I wear a 5 in women's and a 3 in big kid shoes. The small fit me perfectly. I see where some say they run small but I can't say that was an issue for me. They are "snug" but thats what you want with a no show sock. I feel they have support vs the ones i used to buy at Walmart. They are very soft! I am actually buying more today and throwing my other ones in the trash!
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Reviewed in the United States on February 18, 2026
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Lucy Mejia
Massapequa, US
★★★★★ 5
So will not write down your foot
Size: Medium, Color: (001) Black / Black / Castlerock
I love these socks. They have a little bit of gel on the top of the heel for support in your tennis shoes and so your socks don’t write down. Very good quality.
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Reviewed in the United States on May 6, 2026
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Twins9
Charlottesville, US
★★★★★ 5
Comfy and Stay Put
Size: Medium, Color: (002) Black / Black / Halo Gray
These socks are honestly great. They’re super thin and light, so once you have them on, you kind of forget they’re even there. No bulky feeling in your shoes at all. The best part is they actually stay on. I hate no-show socks that slide down after five minutes, and these don’t do that. The little grip on the heel really works, so you’re not constantly adjusting them all day. They’re breathable too, which is nice if your feet run warm. They dry fast and don’t get that gross sweaty feeling. And there’s no annoying seam on the toe, so nothing rubs or feels uncomfortable. Basically, they’re just comfy, stay put, and don’t cause problems — which is all I want from socks.
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Reviewed in the United States on January 16, 2026

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