install
H11 LED swap in 12 minutes
12 Mar · 8 minguide
Knowledge base · tech library
Learn how the lights work.
tech
Lumens vs. candela: what the box doesn't tell you
08 Mar · 6 minprimer
video
Wiring CAN-bus LEDs without resistors
04 Mar · 14 minvideo
fitment
Reading your bulb-size code (H, 9XXX, T-XX)
01 Mar · 5 minguide
install
Halo projector kit fit — Jeep Wrangler JL
24 Feb · 11 minguide
tech
Color temperature, decoded: 3000K → 6500K
18 Feb · 9 minprimer
maint
Headlight haze: restore vs. replace
12 Feb · 4 minguide
video
Beam alignment on a 25-ft wall
05 Feb · 8 minvideo
install
RGB footwell wiring — switched vs. always-on
28 Jan · 7 minguide
Lighting Glossary
Lumenslm
Total visible light a bulb emits — independent of direction or focus. A 9,000-lumen bulb in a bad housing is still a bad headlight.
Candelacd
Intensity in one direction. What actually lights up the road. Beam-pattern engineering decides where the candela land.
KelvinK
3000K = selective yellow (fog). 5000K = neutral white. 6500K = daylight. Above 6500K = blue, useless.
CAN-bus
The bus the car uses to detect bulb failure. Onboard CAN-bus drivers fake the load — no resistors, no flicker.
ECE R112
European regulation for asymmetric low-beam cutoff. Defines how sharply the beam falls off above horizontal.
IP ratingIPxx
Ingress protection. IP67 = dust-tight, immersion to 1m. What you want forward of the firewall.