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-   -   Brake Light Switch Thread Pitch or Specs? (http://forums.pelicanparts.com/porsche-911-technical-forum/391628-brake-light-switch-thread-pitch-specs.html)

DRACO A5OG 02-07-2008 01:54 PM

Brake Light Switch Thread Pitch or Specs?
 
Does anyone know the thread pitch or thread specs of our Infamouse Brake Light Switch?

Is it:
10x1.00 or 10x1.25

Also does anyone know at what PSI our OEM switch activates? 20-50 PSI or 50-100PSI +/-?

I have a manufacturer planning on manufacturing a Low Pressure switch for us P-car guys.

This may be our solution for the defective design of the OEM brake light switch.

TIA

Axiom 02-07-2008 02:46 PM

10 X 10.00

I wonder if the problem could be in the master cylinder?

DRACO A5OG 02-07-2008 02:58 PM

10 X 1.0? right? 10MM x 1.0MM pitch?

The problem is the switch, arcing of the current melts the plastic housing causing poor contact over time and more pressure needed to make a good contact for the lights to activate.

The low pressure insures less PSI to activate the switch so it will always work.

I am trying to see if a Diode can be installed to solve the arcing issue but there is another issue to have enough amps to activate the back up switch II

Axiom 02-07-2008 03:03 PM

10 X 1.0 is correct.

I thought something was odd when I read it.

DRACO A5OG 02-07-2008 03:19 PM

Great! Thanks Rudy.

Now i need to put a guage on an OEM switch to find the PSI

BTW I need to return the 1/4" spacer, will come by soon.

Apparently It will not solve my issue. I need to replace the rear torsion plate bushing at a minimum then re-Camber and Align.

Thanks again man!

Axiom 02-07-2008 03:28 PM

I have a few switches here, you are welcome to them.

DRACO A5OG 02-07-2008 03:30 PM

Oh Thanks Rudy, that would be helpfull.

You get the first couple free :D


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