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 Aug 20 - Aug 25

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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.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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  • 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: 43530737871

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4.6 ★★★★★
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LacieGene
New York, US
★★★★★ 4
Affordable, but lower quality than I expected
Color: White, Size: Queen (2 Pack), Color: White, Size: Queen (2 Pack)
I had an adjustable pillow that came with white, soft, shredded foam with fibers. It was super comfortable. When it came time to replace that one, I specifically chose this OAISZ pillow based on the listing photos that show this has white, soft, shredded foam with fibers. Unfortunately, what I received was low quality blue foam chunks with no fibers. The foam has thick, stiff edges that I can feel. While I was filling the pillow with the foam chunks, I noticed the outer pillowcase had stitching unraveling. The pillowcase feels cool at first, but then it heats up. Overall, these are affordable pillows for a set of two. However, they are low quality. The pillow is comfortable enough to sleep on, but I’m disappointed that the filling is not what is shown in the listing photo. UPDATE: The seller reached out to me after I left the above review and proactively offered a refund which I appreciate. I have revised from 3 stars to 4 stars as a result. The product was not for me, but the customer service was outstanding.
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Reviewed in the United States on November 7, 2025
E
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Elena
Draper, US
★★★★★ 5
It comes in twos
Color: White, Size: Queen (2 Pack)
The pillows are comfortable! They support my sides as I sleep. They don’t flatten out. They are both cool and warm with a sheet over it!
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Reviewed in the United States on May 7, 2026
O
Verified Purchase
Ochoa
Boise, US
★★★★★ 5
Still comfortable and holding shape after 6 months
Color: White, Size: Queen (2 Pack)
We have had these pillows for over six months now and they have been excellent. They have not lost their fluff or shape at all and still feel just like they did when we first bought them. The comfort level has stayed consistent over time, which is something I really look for in pillows. They provide good support without feeling flat or overly firm, and they have held up well with regular use. These are exactly what you expect based on the description, no surprises. Honestly, I regret not buying more at the time. We will definitely be purchasing more for our guest rooms. If you are looking for pillows that actually last and do not break down after a few months, these are a solid choice.
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Reviewed in the United States on January 13, 2026
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Katrina
Los Angeles, US
★★★★★ 5
Wonderful quality pillow!
Color: White, Size: Queen (2 Pack)
I love a good pillow, but in the last few years I haven’t been able to find one….until now! I am so picky because it affects my sleep, but this pillow gives me great support as a side sleeper and it isn’t too puffy. It’s in a beautiful zippered quilted case.
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Reviewed in the United States on May 30, 2026
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PA S.N.
Cuba, US
★★★★★ 5
Highly Recommended…..
Color: White, Size: Queen (2 Pack)
I love these! There are perfect. I’ve never had queen size pillows before and I wasn’t sure if they’d be too large, but the extra size makes positive difference. Very comfortable, soft, yet solid and I expect them to last for a long time. Definitely recommend.
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Reviewed in the United States on May 17, 2026

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