Is there supposed to be a bulb for a cornering lamp in the fog light lens? Seems like there is a dedicated spot for one but I cannot find a reference for one in the owners manual

 

There is only 1 bulb a 50 watt halogen other section is for looks. Perfect opportunity to cut a hole and put your own bulb in there maybe for turn signal or marker light.

 

You are correct about it being a dedicated spot for a bulb. On models in other markets, there was a cornering bulb there. When Toyota made the fog lamps for the US market, they saved money by using the same forms to inject the molten plastic into to form the lamps. The only difference was blocking off the hole where the bulb would go. US lamps never had that lamp.

This is what they look like in terms of the bulb being there in other markets of the world:
https://www.ebay.com/itm/30530797681...evt=1&mkcid=28

 

I always wondered why they didn't have that option in the US... I love the cornering lamps on my 75 Cadillac, especially with living on unlit roads.

 

That's a nice inexpensive upgrade.

 

I added a turn signal into mine. A drill and these guys wired to the turn signal does the job

 

I always wondered why Toyota dabbled in the yellow fog lights as OEM equipment in the US but ended up abandoning it. The ES250, early ES300, and early second gen GS had yellow fog in the US but after that they kind of went away. All that it takes is a very inexpensive light filter that is between the bulb and shield over the bulb to reduce glare.

Years ago I saw some short Mercedes Benz film from the 1960s similar to this one where they hired doctors and engineers to work together for determining how best to light up the road with the then 12 volt sealed beams and fogs. They determined yellow to be the ideal color to create contrast between objects in low light conditions for perception by the human eye. Granted, this is a moot point now that headlamps have gone halogen, xenon, LED, and laser. In other markets they paired yellow fogs with xenon headlamps for optimal lighting. From a pure vanity perspective, it just looks better.

LOVE this kind of stuff that Mercedes Benz used to do in the old days instead of stupidity like perfume dispensers and ability to post on social media while driving like these days.

 

Yellow headlights and/or fog lights can help with reducing the effects of glare from other peoples lights and also slightly increase your perception of objects, but they reduce the range of the headlights and have other side effects. https://en.wikipedia.org/wiki/Selective_yellow

The French required ALL headlights and fog lights to be yellow from 1937 right through to 1992. They only went back to white to comply with EU rules.

True fog lights need to be mounted as low as possible since fog normally clears close to the ground due to the surface condensing the fog droplets into water.
Don't believe me? Next time you encounter fog, get out of your car and get down on your knees and take a look with your head touching the ground.

A friend who used to do rallies had a set of fog lights on his Quattro Coupe that retracted up behind the bumper when not in use but dropped to 2" from the road when deployed.
They were VERY effective but you had to remember to retract them before you went over any big bumps.
These days, they cancel the rally if there is any fog.