I think this is pretty consistent through the model years?
For the LX470 the standard bulb sizes are:
Low beams: H1 (-55W)
High beams: 9005
Fog: H3 (-55W)
For the 100 series the standard bulb sizes are:
Low beams: 9006
High beams: 9005
Fog: 9006
There are slightly brighter halogen bulbs based on specification (2530 and 1870 lumens) called Halogen Infrared Reflective (HIR) (bulb size: 9011 and 9012) that can be swamped for the 9005 and 9006 (1700 vs. 1000 lumens) by filing off the tabs https://store.candlepower.com/mohirbuba.html
My naked eye couldn't quite perceive the difference between the HIR bulbs vs. stock halogen bulbs side by side, but my lux meter did confirm that they are slightly brighter.
More info here: Daniel Stern Lighting Consultancy and Supply
I feel the 100 series headlamp has a pretty poor cut-off and doesn't have the benefit of a projector lens for the high beams like in the LX470.
The issue with most LED bulbs is that they usually use 1 or 2 emitters, which aren't able to emit the full 360 degrees like a halogen bulb. Most the LEDs used have a narrower emission angle of 100-120 degrees? The surface area of the LEDs that emit light are also smaller than the halogen bulbs filament, so misalignment with the reflector housing and/or uneven illumination patterns lead to poor quality illumination on the road with a poor cutoff pattern and even hotspots (glare) to on-coming traffic.
That said, the closest I have seen for more even illumination is a 3 sided LED bulb like this:
I only run these in my high beams and returned the matching set for the low beams as they caused too much glare to oncoming traffic. The 3 LEDs in the radial arrangement still have hot spots that don't mesh well with the 100 series's low beam reflector housing. Oh for the LEDs I added a 3"x1" aluminum heat sink to the external LED drivers and have had them 2+ years without issue.
For the LX470 the standard bulb sizes are:
Low beams: H1 (-55W)
High beams: 9005
Fog: H3 (-55W)
For the 100 series the standard bulb sizes are:
Low beams: 9006
High beams: 9005
Fog: 9006
There are slightly brighter halogen bulbs based on specification (2530 and 1870 lumens) called Halogen Infrared Reflective (HIR) (bulb size: 9011 and 9012) that can be swamped for the 9005 and 9006 (1700 vs. 1000 lumens) by filing off the tabs https://store.candlepower.com/mohirbuba.html
My naked eye couldn't quite perceive the difference between the HIR bulbs vs. stock halogen bulbs side by side, but my lux meter did confirm that they are slightly brighter.
More info here: Daniel Stern Lighting Consultancy and Supply
I feel the 100 series headlamp has a pretty poor cut-off and doesn't have the benefit of a projector lens for the high beams like in the LX470.
The issue with most LED bulbs is that they usually use 1 or 2 emitters, which aren't able to emit the full 360 degrees like a halogen bulb. Most the LEDs used have a narrower emission angle of 100-120 degrees? The surface area of the LEDs that emit light are also smaller than the halogen bulbs filament, so misalignment with the reflector housing and/or uneven illumination patterns lead to poor quality illumination on the road with a poor cutoff pattern and even hotspots (glare) to on-coming traffic.
That said, the closest I have seen for more even illumination is a 3 sided LED bulb like this:
I only run these in my high beams and returned the matching set for the low beams as they caused too much glare to oncoming traffic. The 3 LEDs in the radial arrangement still have hot spots that don't mesh well with the 100 series's low beam reflector housing. Oh for the LEDs I added a 3"x1" aluminum heat sink to the external LED drivers and have had them 2+ years without issue.
series vehicles and I think I'd like to brighten things up a little.
