93 Taurus - Trouble With Dash Lights After Heater Core

 
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Got my 93 Taurus out of the shop last week for a heater core replacement
($536).

First night drive, the only light on the dash was the digital clock. No
instrument lights, no switch illumination.

In the dark, I mistook the auto head lamp slider for the dash light
control. Next day I found the dash light wheel adjuster and set the lights
to full.

Next night, they worked fine. Third night drive, nothing. Moving the
adjustment wheel had no effect, with the exception of turning on the dome
light one the "click" was reached.

So my question is, besides the panel / dash dimmer control switch, is
there another another wiring harness connector that is a likely culprit?
And if so where is it and does anything have to be disassembled to reach
it?

I'd rather not put the car back in the shop, if I can fix the shop's goof
myself.

--
Tony Sivori

Re: 93 Taurus - Trouble With Dash Lights After Heater Core



Just wondering, have you checked the fuse yet?  

Re: 93 Taurus - Trouble With Dash Lights After Heater Core



I haven't checked anything yet. I have no garage and the wind chill in my
location is 8 degrees. Sunday will be a balmy 39 degrees, I intend to
check it out then.

I will be checking the fuse, although the intermittent nature of the
problem, plus the dome lights working from the instrument panel
illumination adjustment switch, make me think the fuse is not especially
likely.

Are the dome lights and instrument panel on different fuses?

--
Tony Sivori

Re: 93 Taurus - Trouble With Dash Lights After Heater Core



 Usually yes. In fact virtually ALWAYS. Dome lights are USUALLY on the
tail light fuse, but often fused separately as well (either fuse will
put them out)

Re: Re: 93 Taurus - Trouble With Dash Lights After Heater Core



Unless the fuse is now blown, which means there's an intermittent
short which took out the fuse after you got the car back.  In my book,
the presence of a blown fuse is grounds for having the shop make it
right.  It sounds like they may have nicked a wire somewhere when they
reinstalled the dashboard and it may have grounded out during car
movement.  If the fuse isn't blown, then I'd first be looking at
connectors.



Re: Re: 93 Taurus - Trouble With Dash Lights After Heater Core



Follow up, for anyone who may care. I checked the fuse and it looked good
to me.

So I returned it to the shop. He did stand behind his work. He had the car
a week, and fixed it at no charge.

I asked what the problem was, he said his mechanic said it was a blown
fuse.

Who knows, maybe I checked the wrong one.

--
Tony Sivori
Due to spam, I'm filtering all Google Groups posters.

Re: Re: Re: 93 Taurus - Trouble With Dash Lights After Heater Core



Most cars have some inline fuses.  Not all are in the fuse block.  But
thanks for letting us know the outcome.  Glad it worked out for you.

Re: 93 Taurus - Trouble With Dash Lights After Heater Core



 Hasn't been an inline fuse in an American market car for well over 30
years. There are, however, SEVERAL fuse panels in most cars - and dash
lights are often double fused. The power for the dash light circuit is
usually tapped from the park/tail light circuit (and switched by the
headlight/park-light/tail light switch) - and then refused at a lower
current value for the dash light circuit - in part so any short in the
dash lights does NOT take the tail lights out - and so the driver can
tell immediately id the tail lights are "on" by the state of the panel
lights.

Re: Re: 93 Taurus - Trouble With Dash Lights After Heater Core



I have a 97 Crown Vic and an Isuzu P'up that would disagree with that
statement.

Re: Re: 93 Taurus - Trouble With Dash Lights After Heater Core

4ax.com:


Does the Isuzu qualify as an American car?
--
Andrew Chaplin
SIT MIHI GLADIUS SICUT SANCTO MARTINO
(If you're going to e-mail me, you'll have to get "yourfinger." out.)

Re: Re: Re: 93 Taurus - Trouble With Dash Lights After Heater Core

On Sun, 29 Jan 2012 12:34:52 +0000 (UTC), Andrew Chaplin


It certainly qualifies as "an American market car."  It's a Chevy Luv
with a different label on it.

Re: 93 Taurus - Trouble With Dash Lights After Heater Core



 No, a Chevy LUV is an Izuzu P'up with a different label on it. And it
most fefinitely is NOT a CAR.

 The only Crown Vics I've seen with inline fuses are limo conversions
or  cruiser/taxi-cab units with non-factory add-on stuff.

Re: 93 Taurus - Trouble With Dash Lights After Heater Core

On Sun, 29 Jan 2012 12:34:52 +0000 (UTC), Andrew Chaplin


 Regardless, it is/was an "american market"  vehicle - although not a
CAR. Trucks  - particularly small manufacturer stuff (read add-ball_
like an Isuzu -) COULD still be doing stuff the way Noah did it on the
ark.

I know some over-the-road transports still had hidden in-line fuses,
particularly on "custom" rigs.

Coach-built limosines did too - some of those peices of crap are so
badly converted they should be outllawed.

Re: 93 Taurus - Trouble With Dash Lights After Heater Core



 Not factory installed. If you have aftermarket equipment, such as
stereos, or remote starters all bets are off.

There are "fusible links" in the wiring harnesses on some, but no
"inline fuses"

If you can show me on a factory wiring diagram I'll admit I'm wrong -.
Or point me to a photo showing it and identifying it.

Haven't seen one since the seventies in a factory harness, and I did a
LOT of auto-electric work.

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