Ryeno

iTrader: (3)

EDIT: THIS IS IMPORTANT, reread this post if you havent already.

After thinking about this some more i realize that what i wrote before MAY not work. (but i believe it still will)

Fact: The 95+ headlight switch has 2 circuits. A voltage+, and 3 wires going to parking lights, headlights and auto; respectfully. Then their is a separate circuit consisting of 2 wires both going to the fog light switch.

Theory: I believe the only logical reason that the fog light switch gets it own circuit is because the voltage to the fog light switch gets switched on when the headlight switch get power.

Experiment :
If you remove the panel that has the foot light, you can see the wires running under steering column toward the center console side. Two of those wires should be black (their may be more black wires btw). You will need to take a multimeter and with the fogs off determine if which wire is live. Then determine the flow of current and cut the + black wire going into the switch and connect it onto a 12v wire

Now for the moment of truth. Turn on your car (yes do this just to make sure the switch is working) Then flip the fog lights switch. 2 things will happen. Either the fogs will work or they wont.

If they do work, you are set.

On the other hand If the fogs dont turn on at all, this means the relay which controls the fogs also gets its power only when the headlights are on. In this case, you'll have to wire up your own b+ signal to that relay.

P.S. I do not take any responsibility for any damaged caused to your car by this modification.

Jeembo

Hell yes. I've been wanting to do this forever. Unfortunately I don't have a multimeter so I'll just guess.

ishootstuf

iTrader: (1)

Cheap Multimeter

SC400TT

iTrader: (4)

Good post up Ryeno!!

I just did that to my 93 project car. Only diff is I asked my resident expert Lexus/Wiring guy Dan Osypian if he could do it for me. He removed the whole stalk off of the wrecked 2000 SC300, and replaced the one on my 93. He then wired up everything to work like stock, so when I install my fogs, they will look and work like stock.

Ryan

IOWNALEXUS

iTrader: (14)

Does the switch still turn them on and off or are they on all the time the ignition is on?? im wanting to be able to use the stock switch to turn them on and off anytime, is this what this mod does???

SpiderN9NE

iTrader: (8)

im thinking that you control them with teh switch if your car came with it. because without this mod you can turn the fogs on by the switch but the lights wont actually come on until the headlights are activated. two seperate switches on the same stalk.

Jeembo

Thanks man. I haven't done much in the way of electrical stuff so I didn't know if I'd break stuff by accidentally connecting the wrong one (hence the semi-baiting post ).

I'd also like to know the answer to ineed's question.

CLNSC3

iTrader: (4)

Thanks for the write up, I have wanted to do this in the past! Now I know how! Thanks again

Lexscme

more pics with the write up. Step by step info plz

CrazySC300

iTrader: (16)

Not being able to turn on the foglights separately from the headlights, was one the only drawback to having actual OEM foglights on 95+ models....Good write up!

Ryeno

iTrader: (3)

i updated my post. If you guys havent already, please reread it.

ThomasGS4

iTrader: (19)

if you wired in that 95+ stalk into a 92-94 and you wired the cornerlights, could you control it with that switch?

Ryeno

iTrader: (3)

yes thats exactly what i am doing. I was going to make another diy for that. But basically you just do the relay mod for your corners. Then you run a wire from the relay to the cabin area, up the steering column and to that switch. The only problem is tapping into the white wire for the switch wont give you enough power to flip it. So you just tap the gray acc wire going into the headunit.

btw for a clean install you drill a hole in the fuse box right next to the oem wire grommet and put the relay inside it, right there. Then tap into the power right before it distributes in the fuse box and use a fuse box screw for the rleay ground. Also ground each fog light to the chassis. That way you only need to run 2 or 3 wires in the engine bay.

masagsxr

There is a DIY for the supras. I think its pretty much the same concept... If you have the manual, i'd trace the color code of the wire and do it from under the dash instead of taking all those things apart... I want to do this as well but just been soooooooooooo lazy heheheee

Link for the supra fog light rewire. I did this for my cousin's supra about a year ago.
http://the-ish.com/supra/?p=13

1sxyrxy

there's got to be an easier way. im going to have to tinker with this on my day off and see what i can do.