Date:         Mon, 26 Dec 2005 14:43:58 -0500
Reply-To:     Ken Lewis <kdlewis_wating_time@ALLVANTAGE.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Ken Lewis <kdlewis_wating_time@ALLVANTAGE.COM>
Subject:      Re: Testing the Brake Light Switches
Comments: To: mark drillock <drillock@EARTHLINK.NET>
Content-Type: text/plain; charset="iso-8859-1"

    I think you may have hit upon something that has always bugged me about
my truck. There is a point during the travel of the brake pedal that
produces RF interference on my radio.  I assumed it was just dirty contacts
in the brake light switch.
    On the other hand, doesn't the brake warning light energize when both of
the master cylinder switches do not close simultaneously?
Ken Lewis
http://neksiwel.20m.com/
----- Original Message -----
From: "mark drillock" <drillock@EARTHLINK.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Monday, December 26, 2005 1:36 PM
Subject: [VANAGON] Testing the Brake Light Switches


> This result does not have to mean that a switch is bad. The brake master
> cylinder has 2 separate pressure circuits and one switch is on each
> circuit. One hydraulic circuit is for the front brakes and the other is
> for the rear brakes. If the rear brakes are not adjusted  or working
> properly, the front brakes can be at pressure long before the rears.
> This means that one switch will close long before the other. It is very
> common for the Vanagon rear brake self adjusters to not be working.
>
> Mark
>
>  Christopher Gronski wrote:
>
> >OK, when testing continuity (ie: not volts) on the switches the one
> >towards the driver seems to be functioning, it does not drop quite to
> >zero with the pedal but very close (0.23 to 0.13). The second switch
> >further away from the driver is not showing continuity (ie: I am
> >gettin 1 all the time)
> >
> >
>
>