Re: [alfa] Brake light switches on '69 GTV

[webb.p@xxxxxxxxxxx]

The pressure switches from a VW Beetle have the straight thread and are a direct replacement.  Used one in my old Duetto.  That was a single circuit but I don't think that makes a difference.

-Peter

> Hello all,
> 
> Yes, 1969 is the year that had the dual brake boosters (as well as other parts
> unique for that year).
> 
> I found one of my brake light switches leaking fluid after about a year of no
> problems.  These switches are pressure activated, and screw into a manifold
> mounted on the firewall.  Tightening them did not help, and neither did
> replacing the leaking one with a new switch from IAP, so I bit the bullet and
> took the whole thing apart.
> 
> What I found was that the switch had male taper pipe threads (looks like a
> 1/8" NPT) but that the female threads on the manifold are straight (no taper).
> When screwed in, the switch doesn't go in all the way -- some of the switch's
> threads still remain visible.  I'm guessing that the leak is from the fluid
> working its way along the threads, which does not quite achieve full
> engagement.
> 
> Is this the way pipe threads are supposed to work?  (i.e., taper male going
> into a straight female)    Am I supposed to use teflon tape, then tighten it
> as much as I dare without cracking the manifold or stripping the threads?
> 
> Are there brake light switches with straight threads to be found??
> 
> Any help appreciated!
> 
> David Khoe
> Yorba Linda, California
> '69 GTV
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