SKU: 43530737871

2pcs Polarity Conversion Relay 12 V H4

Sale price$11.49 Regular price$12.77
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Ships within 48 hours · Estimated delivery Sep 9 - Sep 14

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Description

2pcs Polarity Conversion Relay 12 V H4Description: Some old vehicles are negative control vehicles. The standard HID headlights are positive control, but when connected to negative control vehicles, you may encounter the following problems: 1. Headlight does not light up correctly and cannot be switched between Hi Lo and Hi Lo switching delays. This HID polarity conversion relay can solve these problems, so you can work your headlights normally. 2. H4 Hi Low Switch HID Kit for Phillips

Description:
Some old vehicles are negative control vehicles. The standard HID headlights are positive control, but when connected to negative control vehicles, you may encounter the following problems:
1.Headlight does not light up correctly and cannot be switched between Hi/Lo and Hi/Lo switching delays.
This HID polarity conversion relay can solve these problems, so you can work your headlights normally.
2. H4 Hi Low Switch HID Kit for Phillips Control is useful when installing negative control vehicles.The polarity conversion relay is inserted directly and the negative is positive, positive is negative, easy to use.
3. When the HID headlights start up high voltage, and the high voltage will affect the in-car circuit. This HID polarity conversion relay makes the current more stable and protective device, so it is recommended to install this relay.
4, If you find that there are problems with your newly installed headlights, please make sure that the cause is not the headlight body or due to polarity issues, this polarity conversion relay is the choice to solve polarity problems when replacing HID headlights.

Specification
For 12 V only.
H4Hi/Lo Headlight for Car
Compatible with HID ballasts 35W to 75W
Compatible with LED headlight bulbs
Relay body is completely waterproof.

Fitment:
Applicable Vehicles: 12V car suitable for all negative control vehicles with 4 connectors. Headlight (H4 Hi/Lo Switchable) HID / LED Car / Motorcycle / Truck (For Jimney SJ30,SJ40,JA51,JA71,JA11,JB31,JA12,JA22/Mighty Boy/Fronte) Most domestic cars (signal control of most Toyota vehicles is negative)

Package included:
2 X H4 Negative Polarity Conversion Relay
(show as pictures )
[* Instruction is not included!]

Note:
1.Please check the description or use the year/make/model check finder and replace part numbers to confirm the compatibility before purchasing.
2.Professional installation is recommended.


Warranty:
Returns: Customers have the right to apply for a return within 60 days after the receipt of the product
24-Hour Expert Online: Solve your installation and product problems

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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  • Delivery to the USA:
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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: 43530737871

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4.8 ★★★★★
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Verified Purchase
David James
Houston, US
★★★★★ 5
Qutool double sided cooling pillows
Color: Blue, Size: King(2 Pack)-20'*36', Color: Blue, Size: King(2 Pack)-20'*36'
After letting the pillows sit for 12 hrs they puffed up and feel great Thus far satisfied with our purchase
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
M
Verified Purchase
Mopardodgegirl
Carnegie, US
★★★★★ 5
It works! Quality pillow.
Size: Standard (1 Count), Color: Original White (Cooling)
This does actually provide a cooling effect, and it's very comfortable! The accompanying literature is helpful too. I believe this to be a quality pillow for the price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026
J
Verified Purchase
jin
Pawtucket, US
★★★★★ 5
Most comfortable pillow I’ve ever slept on
Size: Queen (1 Count), Color: Crescent White(cooling)
This is the most comfortable pillow I have ever slept on. It doesn't mash down like other pillows. Cradles my neck perfectly plus it’s cool. I broke my neck a couple of years ago and this pillow feels very good and comfortable. Definitely recommend to everyone. Ive used it since May and it’s retained its shape.
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Reviewed in the United States on June 6, 2026
A
Verified Purchase
AreTrue
Dallas, US
★★★★★ 4
Smell
Size: Queen (2 Count), Color: Original White (Cooling)
The fact that there are not more comments on the smell of these pillows has me worried about some of yall. Listen, I LOVE the weight, and the firmness, it’s perfect for that. However, these pillows are RANK. They have a very strong mildew-ish smell that lingers. I took the outer cover off and washed it and let the pillow air out for a few days, the smell is still very strong when you press your face against it, which one does because it is in fact designed for that purpose. It smells so bad. It’s nauseating. I can smell it through two pillowcases and blanket that I threw on top of them hoping an extra layer would trap the smell. I’ll bake them in the Texas sun tomorrow and hope that helps, because otherwise these are the perfect pillows for someone who wants to feel like they are hugging a torso but can’t stand the sound/feel of someone else breathing. I don’t know…4 stars, if the smell goes away I’ll come back. Update: many many days later. Either they don’t really smell anymore or I got use to it. They’ve held their firmness and shape well. I like them.
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Reviewed in the United States on March 9, 2026
S
Verified Purchase
Samantha
Boise, US
★★★★★ 5
Actually Cooling Pillow
Size: Queen (1 Count), Color: Original White (Cooling)
This is a really nice pillow, I was worried it would be too soft or too firm but it's just right and it's actually cooling, it feels cool every time I touch it. I've noticed an improvement in sleep since using it. Would recommend!
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Reviewed in the United States on May 27, 2026

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