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Here is a bit of data for those of you who believe the GTR Ultra 3 TST is brighter than the F3S Pro. Independent tests show the GTR Ultra 3 measured lumen to be around 4700 per bulb as reported by Goo … read more

LED bulbs do need to be aligned in headlights in order to properly reflect from the headlight lens. 99% of time LED diodes will be aligned left and right in the headlight (3 and 9 o'clock). This is ea … read more

Struggling to find leds that will work in low voltage DRL and high beam modes on a Toyota or Lexus car or SUV? The links below take you to parts that are needed. NOTE: These parts can also work on any … read more

So what causes LEDs to flicker? In almost all cases, installing LEDs in low voltage daytime running lights or lights that use pulse-width-modulation (PWM), LEDs will flicker. The flickering is causes … read more

Resistors usually connect between + and - headlight connector power wires. There are two kinds, plug-n-play or bare wire resistors. The most commonly used resistors for headlight bulbs are 50W 8Ohm. R … read more

Aligning LED bulbs with set screws can be time consuming but if you follow these instructions you will minimize the time required to align the bulbs properly in a headlight. The basic idea is to have … read more