anybody that adds the 3rd light to their car, be sure and inform their insurance company. usually there are discounts for this upgrade...

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 560SL convertible
1987 190D 2.5-5SPEED!!!

1987 300TD
2005 Dodge Sprinter 2500 158"WB
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

I performed this operation on my 86 300sdl a few years ago using an old tailight housing from a wrecking yard. I used factory parts and it looks and works very well. I did find that using the regular size light bulb was too bright in the fog light housing, so I used a smaller 5W bulb instead and it evens out the lights when the running lights are on.

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John
1986 300sdl
1985 380se

I wired up the third brake light today.

I removed the rear hat tray/deck and drilled a hole for the wires to enter the light. Then I ran the wires down the driver side rear speaker hole into the trunk. I trained the wires along the existing wire bundle that goes to the brake lights. I attached the ground at the fender well where the other grounds are bolted and spliced the positive into the black wire with the red stripe.

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Chad
2013 Jeep Unlimited Rubicon
OBK#44
"Pleasure in the job puts perfection in the work." - Aristotle (384-322 B.C.)

SOLD
1985 300TD - Red Dragon
1986 300SDL - Coda
1991 - 300TE
1995 - E320
1985 300CD - Gladys
2006 Nissan Pathfinder LE
1998 Acura 3.0 CL

I really wish there were a modification to be made to an existing third brake light that could be used in the W123 wagons, either high or low in the window.
The angle is just all wrong.

The best would be the Cadillac eyebrow of a third brake light I see on the Escalades, but again if not MB, just looks trashy.

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85' 300D No inspection, No registration fees, Cheap insurance
"If my calculations are correct, when this baby hits 88 miles per hour, you're going to see some serious %$&^."

I'm looking for a third brake light from a w124 wagon. I'm sure I can modify it to work in my w123 wagon.

I came across one recently but it was all cracked. Still looking.

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Chad
2013 Jeep Unlimited Rubicon
OBK#44
"Pleasure in the job puts perfection in the work." - Aristotle (384-322 B.C.)

SOLD
1985 300TD - Red Dragon
1986 300SDL - Coda
1991 - 300TE
1995 - E320
1985 300CD - Gladys
2006 Nissan Pathfinder LE
1998 Acura 3.0 CL

They're not illegal. My mother's 2005 Saab has a rear brake light.

It sits behind the driver's side seat.

I rewired my 85 to have dual lights. These are kinda handy since I can put them on and have tailgaters back off. They also are really great in heavy snow and fog.

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-Typos courtesy of my mobile phone.

There was a guy here who had a 3rd brake light from a mid-late 90s Suburban on his 300TD. I can't recall his name or if he's still an active member.

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'81 MB 300SD, '82 MB 300D Turbo (sold/RIP), '04 Lincoln Town Car Ultimate

Sooner or later every car falls apart, ours does it later!
-German Narrator in a MB Promotion Film about the then brand new W123.

Ok, I had it mixed up. He didn't have a 300TD, it was a 240D. I did find this though. MTU rigged this up for his 300TD a few years ago.
Brake light mod for 123's

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'81 MB 300SD, '82 MB 300D Turbo (sold/RIP), '04 Lincoln Town Car Ultimate

Sooner or later every car falls apart, ours does it later!
-German Narrator in a MB Promotion Film about the then brand new W123.

Nice work!

Pretty cool, huh

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1985 Euro 240D 5 spd 140K
1979 240D 5 spd, 40K on engine rebuild
1994 Dodge/Cummins, 5 spd, 121K
1964 Allice Chalmers D15 tractor
2014 Kubota L3800 tractor
1964 VW bug

"Lifes too short to drive a boring car"