Don Fearn, 9/23/2005,
<54c9j1lnc1r3tamom10slg9e7r50qikdsv@4ax.com>,9:54:07 PM, wrote:

Please explain this quip.

I haven't tried this yet.

This is for an '87/88 Supra. If you're handy and can use a volt/ohm meter,
you should be able to translate this to your car. Not having a 2005 Camry,
I can't do it for you!

Category: MKIII _ 1986.5-1992
Subcategory: Body Electrical System     Visited: 2058
Usability Rating: Coming Soon

Article:
Authored by: Darin Moore

Tools Required: Wire strippers/cutters, Elec. tape, Solderless connectors

Skills Required: Wire stripping/splicing

Note: Tested on an 87, should work fine on 88 too

Okay everybody, here is the rewire for the 87's. I know this works, because I just did it.

I recommend taking the driver's seat out, it makes it much easier to get underneath the dash.

1) Remove the kick panel from the driver's side footwell. Also remove the dash piece under the steering column,
and the scuff plate from the door sill.

2) RELAY : Locate the F/L relay. It is just behind the dashboard up and away from the fuse block.
It clicks when the fog lights on turned on. Locate wire #1 (red/yellow) It
will test at a constant 12volts. leaving enough wire to splice with, cut
the wire, and tape off the dash side. Attach a splice / lead to the relay
side, and connect it to a wire or fuse that is 12v when the lights are
switched on. ( I used the bottom side of the Tail fuse). Locate wire #2
(white/green) cut this wire the same way, but attach your lead from the
relay to a known ground. (There is a large screw very close to the relay
that works perfect.)

3) SWITCH : pull the switch panel with the fog light switch away from the dash.
It snaps right off. locate the third wire from the top (red / black). Cut
this wire, tape off the dashboard end, and run a lead from the switch to
the third wire of the rear defogger switch (yellow). Splice your lead into
this wire.

4) TEST : TURN THE IGNITION SWITCH ON! turn the parking lights on, then click
the fog light switch, it should work. If it doesn't, recheck all your
wires, and make sure that you have the relay connected to a fuse that is
12v when the parking lights are ON, and that you have a good ground. If
you have a test meter, it makes it much easier. If it works, put every
thing back together, and you are done. Note : My fog light switch was
wired with the third wire being red and green. My guess is this was done
during service some time before I bought the car. simply take the wire
plug out of the fog light switch, remove the back, and arrange the wires
from top to bottom in this order. 1 white/green, 2 green, 3 red/black, 4
red/green. You will notice that all the switches have the white/green and
green wires in the same place.

Oh!, and make sure you turn the ignition switch on when testing, I feel like
an idiot, but I forgot to do that, and was halfway through my sailor's
dictionary of swear words before i saw my keys sitting on the passenger's
seat. Doh!

This should provide a starting point; you'll at least have some idea what
you're looking for. Toyota has probably changed wire loom colors, so
that's where the meter will come in handy.

Perhaps if you can find the relay (chances are it will be close to where
it's described here) and can give us the wire colrs/voltages, someone here
may be able to help you out a little more.

Hey, tomorrow's Saturday; what ELSE did you have to do???  ;)

Good luck Write back with what you find!

In some states, like Illinois, it is illegal to drive with just fog lights
when headlights are required so Toyota built this into their systems.  The
same reasoning applies to the fog lights turning off when the high beam
headlights are on.

 Not really - properly adjusted low beams in fog don't help that
much, but they don't hurt either if you have real fog lights on.  Now
as to the people with their low beams aimed too high, or who try
running with high beams or driving lights on...

 Yeah, because most US states and many other countries have laws on
the books restricting fog lights to be used only when the headlights
are on.  Some say low beams only, others specify just 'headlights'.

 The reason for the law being there are too many morons out there who
would not turn on their tail lights and try driving around with the
fog lights only, and the blacked out back of the car would be a sure
target to get rear-ended in the fog...

 The wiring can be changed, but why do you want to?  You know better,
but other drivers of your car can get popped for that 'no headlights'
ticket.

 I would suggest KISS - carry a roll of duct tape in the car.  If you
hit heavy fog you put a strip of tape to physically block the top half
of your headlight low beam lamps so they can't throw any light above
the cutoff level at all.  Simple, cheap, and highly effective.

    --<< Bruce >>--

Because Fog Lights are deemed to be Auxiliary Lighting. Since they are an
auxiliary light source, they require a main light source at the same time so
they do not perform main lighting services.

And Fog Lights are also tied to the Low Beams because highbeams reflect lots
of light in your eyes and should NEVER be used in foggy situations. Lights
that come on with High Beams are called Driving Lights, and they must be
wired to not come on with the Low Beams. Driving lights are aimed higher and
they shine further down the roadway, if they were used in fog they would
effectively blind you. Fog Lights are aimed low to light the fog from a low
angle and reduce the glare of the low beams and increase the visibility.

Actually, they wouldn't help at all as a primary lighting source. They are
aimed too low to see anything by themselves.

Yes. Not because Scion makes it that way, but because the law says they have
to make it that way.