[s-cars] Nutz again revisited

[Robert Rossato]

Bob - When you say you're checking voltage across the fuses and seeing
zero, are you literally doing that or checking for voltage to a known
ground?  If your ground for the headlights (don't know how this Blau
harness is configured) is bad you won't see any voltage by checking it
across the fuse.  Need to check the power into the fuse to a known
ground.  If you have power there then I would check the other side of
the fuse for continuity to a known ground.

Bob

> -----Original Message-----
> From: s-car-list-bounces at audifans.com 
> [mailto:s-car-list-bounces at audifans.com] On Behalf Of Robert Myers
> Sent: Thursday, March 31, 2005 11:25 AM
> To: s-car list
> Subject: [s-cars] Nutz again revisited
> 
> 
> 
> That light at the end of the tunnel now seems to be an 
> onrushing train.  :-(
> 
> Rehash of where I've been:
> 
> > > I pulled the fuses for all four lights (high/low-R/L) and turned 
> > everything
> > > ON/OFF and found no voltages across any of the open fuse 
> positions.  That
> > > tells me that there is no voltage reaching the fuses.  If 
> no power reaches
> > > the fuses then there is no trigger signal reaching the 
> light relays.  The
> > > problem has to be before the fuses.
> > >
> > > Looking at Bentley (X-822, if it helps) it looks to me 
> that there is no
> > > power coming from the switch to the fuses.  Power comes 
> from the ignition
> > > switch to the main on/off switch to the dimmer switch.
> > >
> > > Possibilities:
> > >
> > > 1.      Bad ignition switch.
> > > 2.      Bad main light switch.
> > > 3.      Bad dimmer switch.
> > > 4.      Something else?  What?
> > >
> > > The dimmer switch simply turns the high beams on/off.  If 
> it goes bad the
> > > low beams should still work.  That leaves the ignition 
> switch or the main
> > > light switch.
> > >
> > > Other lights - parking lights, turn signals, etc. still 
> work.  Dash 
> > lights,
> > > etc., work when the main switch is turned on.
> > >
> > > My first guess is a failed ignition switch portion or 
> possibly a loose
> > > connector for the ignition switch.
> > >
> > > Does any of this make sense?  How far off base am I?  
> Suggestions?  I
> > > realize I haven't completely ruled out the main light switch.
> 
> OK - more results:
> 
> I replaced the main headlight switch assembly which includes 
> both the main 
> head light switch, the turn signal stalk/switches and the 
> dimmer switch as 
> well as the cruise control switches.  BTW, I have such a used 
> switch for 
> sale in good working condition.  Part # 4D0 953 513 C 01C.  
> Retail cost, 
> new, $120 plus s/h.
> 
> No joy.
> 
> Replaced the electrical portion of the ignition switch.
> 
> No joy.
> 
> Repeated the test at the fuse box checking for voltage at the 
> fuse.  No 
> change.  Power is still not getting to the light relay trigger 
> connectors.  That's not terribly surprising since the lights 
> aren't working.
> 
> Now what?  It really would be nice to be able to drive my car 
> after dark.
> 
> 
> Bob
> Http://Chips-Ur-S.com
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