90q No Brake Lights

[Tony Hoffman]

Actually, it says "BRAKE LIGHT", but I guess I wasn't paying attention the
first time. Anyhow, the autocheck system does indeed compare the resistance
side to side. When I hooked up the trailer lights, I only hooked them to the
left brakelight, which is what set it off. The resistance was much lower on
the left, with three light bulbs instead of one. I guess it doesn't monitor
the third light in the window. I'm not quite ambitious enough to pull them
out :)

Tony Hoffman


On 3/12/07, Tony Hoffman <auditony at gmail.com> wrote:
>
> Well, looking at the schematics, it monitors everything, park, headlights,
> and brake kights. On the V8, the brake light symbol says "BRAKE". I just did
> it :) But, the switch being bad would indeed not trip the autocheck. The
> autocheck is wired after the switch. It does indeed check resistance between
> circuits. In fact, hooking up a trailer to the back of a V8 will trip it,
> because of the lower resistance of the additional bulbs.
>
> As for both bulbs being out, I'm going out to pull them both out of the
> V8, I'll report back in a minute. I'm thinking it will still trip it.
>
> Tony Hoffman
>
>
>  On 3/12/07, Mark R <speedracer.mark at gmail.com> wrote:
> >
> > Ah yes.  I stand corrected.  See?  I knew Huw knew!   ;-)
> >
> > Mark Rosenkrantz
> >
> >
> > On 3/12/07, Huw Powell < audi at humanspeakers.com> wrote:
> > >
> > >
> > >
> > > > I thought just the opposite.. the early systems didn't monitor the
> > head
> > > > lights.  But I could very well be mistaken.
> > >
> > > They definitely monitored the headlights - the system has to be
> > > disabled/bypassed when setting up relays.
> > >
> > >
> > > --
> > > Huw Powell
> > >
> > > http://www.humanspeakers.com/audi
> > >
> > > http://www.humanthoughts.org/
> > >
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> >
>
>