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⚡ Light up your ride with precision and power — don’t let dim headlights hold you back!
The H4 Relay Harness Kit is a precision-engineered wiring solution designed to fix common LED headlight issues like flickering, dimming, and overheating plugs in Toyota Tacoma and Pickup models from 1988-1997. Featuring dual durable relays and high-temperature ceramic sockets, it ensures reliable 12V power delivery and protects your vehicle’s electrical system while enabling seamless LED upgrades.
| ASIN | B089M4DC45 |
| Best Sellers Rank | #67,679 in Automotive ( See Top 100 in Automotive ) #169 in Car Audio & Video Wiring Harnesses #222 in Automotive Replacement Electrical Wiring Harnesses |
| Brand Name | RENMAII-LIGHT |
| Cable Type | Automotive Wiring Harness |
| Connector Type | H4/9003 |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,165) |
| Item Dimensions | 7.28 x 3.93 x 2.95 inches |
| Item Weight | 0.33 Kilograms |
| Manufacturer | RENMAII-LIGHT |
| Material Type | Ceramic |
| Model | REN012 |
| Part Number | REN012 |
| UPC | 653437481913 |
| Warranty Description | One year warranty |
| Wire Diameter | 1.3 Millimeters |
R**Y
Still working great after 2+ years
Easy to install have had zero issues in the 2+ years its been in the truck. Cheaper than 2 relays and the wire to do it yourself and much easier to install. Only thing that gives me any pause is it only plugs into one headlight plug. So if something happens to your factory wires you will lose both lights.
A**R
Easy and functional
This was very easy to install in my 1989 Toyota pickup and my new LED lights have full function
R**B
Good quality made and wires long enough to allow for extra length if needed for your install.
I needed this for a set of LED lights ordered for my 1992 Toyota pickup, based on a YouTube install video. My truck required the relay for the bulbs to work, and they worked great following instructions. I was impressed with the quality of this harness, and it was long enough to fit both headlights, as intended, and ground wires were plenty long enough to allow me to find a grand for both sides, plus the positive cable was perfectly long enough too.
L**Y
Great surprise
I thought I was going to have to rewire everything with a new switch, but this harness when I followed directions I could use the factory switch , great surpise I would buy it again
S**Y
Great relay harness
It fit great, made the headlight installation really easy. High quality relay harness that gets the job done.
S**N
Good quality wiring
1991 Toyota Pickup- Happy with the purchase great connection quality, easy installation, wiring was thick and overall everything worked and fitted.
K**M
I am happy with the purchase.
I was able to complete the repair thanks to this part. It's an invaluable purchase. I highly recommend it to anyone who is hesitating whether to purchase it.
M**R
Great way to increase headlight brightness on older cars
If you have an older car that doesn't run relay switched circuits, this is a great way to add one that makes the most impact from a safety perspective. It is extremely simple to install and makes a big difference in bulb brightness. And you don't have to worry about a corroded wire burning down your car by pulling too many amps and melting.
J**A
Worked great to convert my 1996 Tacoma to LED 7x6 lights. China kit but decent quality!
J**N
Very small and thin wire and connector
Trustpilot
1 week ago
2 months ago