Has Anyone Tried Adding a Second Rear Foglight?
Member
Joined: Jan 2008
Posts: 100
Likes: 0
From: Chicago IL
S550, E320 Sport Wagon and A170CDI :)
guys, try disconnecting both rear tail lights and then brake - your left rear fog light become stop light and on the right side you will see the second same light as a spare stop light - in my wagon it does work...
I found it while I was installing parktronic....
I've never seen the spare brake lights before.....
rgr
hubi
I found it while I was installing parktronic....
I've never seen the spare brake lights before.....
rgr
hubi
Member
Joined: Jan 2008
Posts: 100
Likes: 0
From: Chicago IL
S550, E320 Sport Wagon and A170CDI :)
Super Member
Joined: May 2003
Posts: 967
Likes: 77
From: Long Island, New York
2018 E400 4matic Wagon
Please tell us about the Parktronic installation in your wagon. When I bought ours, the dealer was about to retrofit Parktronic, which was never available as a factory option on US wagons, but then the mechanic noticed that there wasn't enough clearance for the sensors. Luckily, he noticed this before he drilled the holes.
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Member
Joined: Jan 2008
Posts: 100
Likes: 0
From: Chicago IL
S550, E320 Sport Wagon and A170CDI :)
Please tell us about the Parktronic installation in your wagon. When I bought ours, the dealer was about to retrofit Parktronic, which was never available as a factory option on US wagons, but then the mechanic noticed that there wasn't enough clearance for the sensors. Luckily, he noticed this before he drilled the holes.
Front is connected to the stop light and rear to the backup lights.
I have some pics and will upload once I found them....
Hubi
Senior Member
Joined: Aug 2004
Posts: 345
Likes: 2
From: Chicago burb
95 C36
guys, try disconnecting both rear tail lights and then brake - your left rear fog light become stop light and on the right side you will see the second same light as a spare stop light - in my wagon it does work...
I found it while I was installing parktronic....
I've never seen the spare brake lights before.....
rgr
hubi
I found it while I was installing parktronic....
I've never seen the spare brake lights before.....
rgr
hubi
I almost never use the rear fogs unless the weather is bad, however I admit I do use it when I have an idiot tailgater behind me. Would like to have both sides light up without giving up my LED brake lights....
Thanks
Member
Joined: Jan 2008
Posts: 100
Likes: 0
From: Chicago IL
S550, E320 Sport Wagon and A170CDI :)
A bit confused, so disconnecting both rear tails will result in the rear fogs (lower portion of the taillight) becoming the brake lights? When pulling the knob all the way out to turn on the rear fogs, do both left and right lamps light up? Will reconnecting both taillights go back to its normal function or will both sides now light up when turning on the rear fogs?
I almost never use the rear fogs unless the weather is bad, however I admit I do use it when I have an idiot tailgater behind me. Would like to have both sides light up without giving up my LED brake lights....
Thanks
I almost never use the rear fogs unless the weather is bad, however I admit I do use it when I have an idiot tailgater behind me. Would like to have both sides light up without giving up my LED brake lights....
Thanks
When you disconnect the stop light (or it will burn out) the rear left fog light become the stop light and the additional, on the right side, starts working as well. After connecting the stop light back, everything is coming to the previous working condition.
that's what I found by accident actually....
hubi
Banned
Joined: Feb 2008
Posts: 0
Likes: 118
I wouldn't follow Hubi's trick to turn on both fog lights. What logic is behind your idea Hubi? Why would you disconnect an important light? Perhaps you even get errors stored for that. Your car throws errors when a blinker goes bad not to think about the stop light 
If you want both fog lights turned on you might wanna consider doing it the right way.
If you want both fog lights turned on you might wanna consider doing it the right way.
Member
Joined: Jan 2008
Posts: 100
Likes: 0
From: Chicago IL
S550, E320 Sport Wagon and A170CDI :)
I wouldn't follow Hubi's trick to turn on both fog lights. What logic is behind your idea Hubi? Why would you disconnect an important light? Perhaps you even get errors stored for that. Your car throws errors when a blinker goes bad not to think about the stop light
If you want both fog lights turned on you might wanna consider doing it the right way.
If you want both fog lights turned on you might wanna consider doing it the right way.
It was only to show you guys that if you loose the stop light - you'll be safe with the fog lights becoming the stop light...nothing more...
Hubi
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From: Almeria
W211 cdi
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From: Chicago
2025 AMG E 53; 2018 GLC300 4Matic; 2003 360 Modena
The intent of one light, driver side (left hand drive cars, US for example) was based on the principle of drive right, pass left. A concept long lost and even disappearing in Germany. As you would be always driving in the as far right lane as possible, the left or driver side only rear fog light being lit is all that you would need. It's indicating the left side of the car - the side you should be passing on.
I'd be curious to why this was deviated from, and both sides lit.
I'd be curious to why this was deviated from, and both sides lit.
Banned
Joined: Feb 2008
Posts: 0
Likes: 118
The intent of one light, driver side (left hand drive cars, US for example) was based on the principle of drive right, pass left. A concept long lost and even disappearing in Germany. As you would be always driving in the as far right lane as possible, the left or driver side only rear fog light being lit is all that you would need. It's indicating the left side of the car - the side you should be passing on.
I'd be curious to why this was deviated from, and both sides lit.
I'd be curious to why this was deviated from, and both sides lit.
I like symmetrical and that’s one reason why I did it. CA drivers are amongst the most aggressive, most uneducated and most egoistic drivers in the world and I like to have as much red on my tail as I possibly can to show a maniac behind me flying through thick fog that I’m right there. That’s my personal opinion and reason why I enabled both fog lights on all of my cars.
