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Installing a Third Brake Light in the 911

Pelican Technical Article:

Installing a Third Brake Light in the 911

Ted Stringer

Applicable Models:

Porsche 911 (1965-89)
Porsche 912 (1965-69)
Porsche 930 Turbo (1976-89)
Figure 1
Figure 2
     The first thing that you will need to do to is to lower the A/C condenser so you don't nick it with the drill when you make the mounting holes. Next you will need to take the gasket and mark the position on the hood (Fig 1) light will be installed at. Then you will have to drill 3 holes in the hood. The outer holes should be '" in diameter. The middle hole should be just large enough to fit the wires through (Fig 2). Don't worry about the plug in the middle of the wires as it will be removed. Also the hood must be up while you drill the holes so you don't nick the body underneath.
     Cut the plug off and splice the gray and black/yellow wires together. Fit the gasket on to the light and have someone hold it to the body while you run up the 2 screws from underneath. Run the wire over and through one of the holes in the drivers side hinge, and then under the electrical panel.

     The easiest place to access the brake light wiring is at the back left side of the engine compartment near the plug that goes out to the lower brake lights. On my car the brake lights are a black/yellow wire, you will want to check the color code for your car. Splice the grey wire from the 3 rdbrake light onto the wire for the existing lights. Also splice the brown to any other brown wire. All of the brown wires on the cars should be ground.

     Test the lights, and enjoy the added brake light visibility (Figure 3).

Comments and Suggestions:
bill bergman Comments: Re my 30 April comment:
John Nelson's article below on his 944: that is the light I used INside the Targa's rear window: "Porsche third brake light assembly Pelican Parts PN# F-631-070-00 was $52.90 and is a Genuine Porsche part."
Just under the rollbar is a higher installation than Ted's, and very visible. Since it is inside, I ran a wire from the brake pedal switch.
Better than insurance against idiots,as Ted points out.
August 18, 2010
  Followup from the Pelican Staff: - Sorry for the long delay in replying. We have recently added staff and are trying to get caught up. Thanks for writing!  
Bill Bergman Comments: On my 1970 Targa, for the same safety reason [drive a good bit in Germany from Belgium]I installed the third brake light that goes INside the rear window, at the top. Looks original, is nice & bright. For a Targa I'd recommend this over Ted's pop-up light.
April 30, 2010
  Followup from the Pelican Staff: Thanks for the feedback. Glad we could help. - Nick at Pelican Parts  
tom Comments: Ted,
I have a 1986 911 built for the European market. The rear fog light was missing, so I bought one through Pelican. The light only has a terminal for the hot lead. I know that I must land a common wire in the housing somewhere, but there is no accommodations in the housing to do so. All the other lights in the car have two terminals as you would expect.Was your brake light the same odd configuration? Am I missing something here?
Thanks in advance for any advice,
PS: I can send a photo if necessary
July 28, 2009
  Followup from the Pelican Staff: I'm guessing if your car didn't have that wire, you might have to wire in a ground lead. - Wayne at Pelican Parts  

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