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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 | #46,976 in Automotive ( See Top 100 in Automotive ) #96 in Car Audio & Video Wiring Harnesses #122 in Automotive Replacement Electrical Wiring Harnesses |
| Brand | RENMAII-LIGHT |
| Brand Name | RENMAII-LIGHT |
| Customer Reviews | 4.6 out of 5 stars 1,171 Reviews |
| Item Weight | 0.33 Kilograms |
| Manufacturer | RENMAII-LIGHT |
| Manufacturer Part Number | REN012 |
| Manufacturer Warranty Description | One year warranty |
| Model Number | REN012 |
| UPC | 653437481913 |
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.
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.
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.
A**R
Easy and functional
This was very easy to install in my 1989 Toyota pickup and my new LED lights have full function
S**Y
Great relay harness
It fit great, made the headlight installation really easy. High quality relay harness that gets the job done.
R**R
Good quality and Nissan adaptable
I used these to convert my 1984 Nissan 720 4×4 to LED headlights. I did have to swap a couple of wies, but it was easy to remove them from the plug and move them to the needed spots. These are wired for old Toyotas, but with creativity will work on old nissans :)
R**Y
As expected
Works great and fixed my issue on my Toyota MR2 after installing LED headlights.
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.
J**A
Simple, Quality kit and easy to use
Worked great to convert my 1996 Tacoma to LED 7x6 lights. China kit but decent quality!
J**N
Wire
Very small and thin wire and connector
Trustpilot
1 month ago
1 month ago