Thanks Paul,
I better understand it now.
What I'll do is take the switch out and put the connector on it in both
ways.
If the result remains the same the switch itself is really faulty - if it
works only one way - fine for me, although having the warning light on all
the time is no good @ all.
What puzzles me is the brass actuator of the switch really part the
electrical circuit or is it only mechanically actuating the internal switch.
Yes the connector fits in two ways.
It has two different wire colors (don't know what by heart).
Put it on the test soon.
Remains the question: where can I get a new switch. On the local market I
got the message NLA.
Cheers,
Hans
-----Original Message-----
From: paul.hunt1@virgin.net [mailto:paul.hunt1@virgin.net]
Sent: maandag 17 juli 2000 16:31
To: Duinhoven_Hans@emc.com
Cc: mgs@autox.team.net
Subject: RE: Adjusting break warning switch - need one
The brake-failure switch is a bit sneaky in that although it has two wires
connected to it this is only part of the story. With the switch off the two
wires (both black/white) are connected together via a link inside the switch
and this allows the brake test switch to light the lamp showing there is
continuity through the circuit. The brake failure switch, when it operates,
connects a ground to the internal link which lights the brake failure lamp.
If the brake failure lamp is coming on with the wires connected one way
round but not the other this implies that the switch has operated i.e.
unbalanced pressure in the braking system or switch not properly
centralised, and the internal link is also broken. The broken link is an
internal failure of the switch which must be replaced.
It is not the normal function of the switch to disconnect this link when
brake imbalance is detected since the two wires can be connected to the
switch either way round. If the switch did disconnect the link and only
ground one connection in the event of brake imbalance the wires would be
different colours and the connections polarised to prevent incorrect
connection, since the brake failure warning light would only come on in one
orientation.
PaulH, just back from hols in California, Arizona and Nevada.
> Date: Mon, 3 Jul 2000 03:03:33 -0400
> From: Duinhoven_Hans@emc.com <mailto:Duinhoven_Hans@emc.com>
> Subject: RE: Adjusting break warning switch - need one
>
> Hi,
>
> This is the only system failing in my '71 BGT. The switch is not available
> here.
> Please let me know if you can find one.
> If I make the cable connected 180 degrees turned on the switch the alarm
> light remains on. - This really puzzles me.
> The switch is defect anyway due a broken contact pin for the cable
> connector.
> Can this be the cause?
>
> Paul Hunt have you a clue?
>
> Cheers,
>
> Hans
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