[Healeys] Brake Lights

[Tom]

The most recent AHCUSA club magazine had an article written by Roger Moment
advocating mechanical brake switches.   My original pressure switch
required a lot of pressure to light the brakes, so I installed a mechanical
10 years ago.   When the mechanic switch failed last year, I realized the
pressure switch wasn't working at all.

Seems like the mechanical switch is a really wise idea.

- Tom

On Mon, Mar 18, 2019 at 1:39 AM Al Fuller <alfuller194 at gmail.com> wrote:

> Bob - before you give up on the mechanical switch you may want to check it
> with an ohm meter...
>
> I have several mechanical switches here - two are normally open and one is
> normally closed [lever-arm switch].  If it is normally closed it would give
> you the symptoms you describe.
>
> Al Fuller
>
>
> -----Original Message-----
> From: Healeys [mailto:healeys-bounces at autox.team.net] On Behalf Of R.
> Lindsay
> Sent: Sunday, March 17, 2019 4:30 PM
> To: Bob Haskell <rchaskell at earthlink.net>
> Cc: Healey List <healeys at autox.team.net>
> Subject: Re: [Healeys] Brake Lights
>
> I think I have. Reconnected the pressure switch and all is good. The added
> mechanical switch must have failed.
>
> Thanks for everyone’s input!
>
> Price Lindsay
>
> Cell: 630-841-6300
> Email: 050.rpl at gmail.com
>
> Sent from my iPhone
>
> > On Mar 16, 2019, at 9:51 PM, Bob Haskell <rchaskell at earthlink.net>
> wrote:
> >
> > Price,
> >
> > So you're saying that both switches are hooked up now and only the
> mechanical switch was before?
> >
> > How is the mechanical switch tied into the harness?  At the original
> hydraulic switch?  So there are there is a pair of wires on each post? If
> so, make sure that each pair has a wire from the harness and a wire from
> the mechanical switch.  If the two harness wires are tied together, then
> you've bypassed the switches and the brake lights will be on.
> >
> > I would also disconnect each switch from the harness and check
> continuity across the switch.  The hydraulic switch normally fails open,
> but if either is closed all the time, then the lights will be on.
> >
> > Cheers,
> >
> > Bob Haskell
> > Austin Healey 3000 MkI registrar
> > http://www.ciahc.org/registry_3000mk1.php
> >
> >> On 3/16/19 2:42 PM, R. Lindsay wrote:
> >> I have a new wiring harness installed on my BJ8.  When I turn on the
> ignition, the brake lights light and stay lit until I turn the ignition
> off.  I was convinced to add a mechanical switch, which I did, and it
> worked fine (the brake lights turn on only when the pedal is pushed) until
> the new harness was installed.
> >> I did not install the harness and wonder where to start to find the
> issue.  If the in-line switch (which is original to the car) is hooked up
> as well as the mechanical switch, could this cause the issue I’m
> describing?  Could there be a crossed wire or two somewhere?  I checked the
> way the rear lights were installed and red to red and purple green to
> purple green were connected to each other.  The black wires are both to
> ground.
> >> Any help or suggestions would be greatly appreciated.  Thank you!!
> >> Price Lindsay
> >> 67 BJ8
> >> Sent from my iPad
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