







🚗 Light up your ride without the flicker—drive smarter, not harder!
The KOOMTOOM H4/9003 LED Load Resistive Connector is a high-performance CAN-BUS decoder designed to eliminate LED headlight flickering, error messages, and radio interference. Operating at 12V DC and 4A max, it offers a plug-and-play installation compatible with 95% of vehicles, delivering a hassle-free upgrade to your LED lighting system while protecting wiring integrity.






| Manufacturer | koomtoom |
| Brand | KOOMTOOM |
| Package Dimensions | 13.5 x 10.6 x 5.7 cm; 230 g |
| Item model number | JM-H4 |
| Manufacturer part number | JM-H4 |
| Position | Right |
| Bulb type | LED |
| Voltage | 12 Volts |
| Item Weight | 230 g |
S**H
Worked
Did the job perfectly in my Astra Gtc, kept getting the usual check bulb message on the led headlights. This sorted the problem instantly.
B**R
Did not stop flickering
Solved the can bus errors but the lights flicker for the first 15 seconds after they are switched on.
J**S
LED headlight flicker on 2006 Jeep Grand Cherokee fixed with this device!
I had purchased Bevinsee LED headlight bulbs for my 2006 Jeep Grand Cherokee Overland. The high beam headlight would not fully turn off when switched to low beam lights and would flicker. This device fixed the problem. Installation was simple as was just a matter of installing this between the headlamp connector and vehicle headlamp harness. You have to pay attention to polarity. Works great. Item feels like it is robust and well made. If you have a flicker problem with aftermarket LED bulbs, this seems to fix the problem, I can confirm it works at least for a 2006 Jeep Grand Cherokee.
C**R
It’s ok
I had to purchase this load resistor to get rid of the error message on the dash. It worked the error message has gone now but the led lights still flicker a couple of times when I turn the engine on
R**O
Brilliant decoder
Easy to install and no radio interference and error messages
A**R
Audi A4 B6 1.8T Cabrio
This product worked fine on one headlamp, thinking a faulty unit, i orderd a second set, but still the same. 50/50 if works on this model car i would say... in my opinion.Also the ceramic sockets are very fragile and cracked as i plugged into it. I was gentle as could have been being an electrical guy.
P**L
Got rid of radio interference
👍
C**R
Very happy with service and product
Good solid product and work well
ترست بايلوت
منذ 3 أسابيع
منذ 3 أسابيع