[T3] Brake Light switch

Daniel K. Du Vall dduvall at 1peter4-10.org
Mon May 14 13:07:00 PDT 2018

Sorry about that was not sure which to use. Will do that in the future. 
I have it all in now and did not eve cut a single wire 😊 
I will take some video and pictures of it and post a link. 
Was not able to get that panel back in for now will work on that in a future date. Getting to hot outside now.
The panel will need a bit of clearance work done as well as some carpet but not much.
The arm of the switch hits the side near the clutch and stick out past the carpet a bit but the body of the switch tuck nicely in the area just below the brake pedal. 

Oh and colors are accurate at least on this 72. 
Black HOT
Black/Red Switched return

Daniel Du Vall

-----Original Message-----
From: type3-vwtype3.org <type3-vwtype3.org-bounces at lists.vwtype3.org> On Behalf Of Jim Adney
Sent: Monday, May 14, 2018 2:18 PM
To: type3 at vwtype3.org
Subject: Re: [T3] Brake Light switch

On 14 May 2018 at 17:46, Daniel K. Du Vall wrote:

> Hello I am adding in a mechanical brake light switch into my 72 
> Squareback. Looking at the wiring diagram I believe I need to tap into 
> the Black and the Red/Black that go to the T3 triple cable connector.
> Is this correct I don't want to cause any strangeness with the system 
> so want to leave the current in place.

I'm not sure I trust the colors shown in the diagram. Your switch should go between the wire that is hot (whenever the key is ON) and the wire that lights up the brake lights when you connect it to the hot wire.

If you figure out a good way to install a mechanical switch, please share it with us.

Reliability of modern switches has certainly been a problem. I don't know the root cause, but they are cheap and easy to replace. If you do the replacement quickly, no bleeding is necessary.

> FYI: the current pressure switches are failed and I never liked how 
> slow to react they are when they do work.

Hmmm, I never noticed a reaction time problem with them, but it's usually hard to watch your own brake lights.

BTW, there's no point in sending list messages to more than one list address; that just causes your message to be sent out more than once. The only one you need is type3 at vwtype3.org.

Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA

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