How-to: Alternate Stand Alone Fog Light Mod Method *pics* - Lexus IS Forum
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post #1 of 27 (permalink) Old 03-23-2008, 08:07 AM Thread Starter
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How-to: Alternate Stand Alone Fog Light Mod Method *pics*

The two old fog mod threads either had small pictures or no pictures. So I merged the two threads and created this one. Thought it would be helpful to the legion of new 1st gen IS owners out there and the ones that will join in the future.

Credit goes to tony and irv_usc for their original threads:

https://my.is/forums/f53/how-stand-al...ts-mod-106666/
https://my.is/forums/f90/how-alternat...method-199809/
================================================== ========

Pros and Cons to this method over the original:

Pros:

1. The Fog Mod circuit is independent of the ignition circuit. If crap were to happen with the fogs that causes a short in the circuit with the original fogmod, your car will not start. This can cause a panic until you realize the fuse is blown. (the add-a-circuit portion can be added to the original method to fix this, in case you were wondering)
2. Cost of the Fog relay if you happen to break the prong while bending it
3. Damage caused to the fuse panel by forcing an extra wire in the slot.

Cons:
1. Costs more than the original. (approx 8-11 dollars for the Add-a-Circuit, 2-4 dollars for the quick disconnects, etc)
2. There is more work. More crimping of terminals, plus filing down the quick disconnects to fit the original relay plugs.

================================================== ========

Parts Needed:
1 Mini Add-A-Circuit (Found at Pepboys, Autozone or partsexpress.com)


3 x Male quick disconnects


4 x Female shielded quick disconnects


2-3 feet of 16 GA. Wire


1 x 7.5a mini fuses:


Tools Needed:

ratchet with 10mm fitting, wire strippers, crimping tool, fuze puller or tweezers

-------------------------------------------------------

Step 1: On the passenger side, pull up on the door plastic runner along the door sill. It is attached by clips and should pop right up with ease.




Remove the kick panel cover to expose the fuse box. This is attached by metal clips, and requires a little more force.





Step 2: Remove these two bolts (Size 10 Metric).One is on top one is on the bottom.




Step 3: Lift up on the fuse panel and pull it open to see the Fog Relay.





Step 4: Make three 4-6" wires with a Male quick disconnect on one end and one Female quick disconnect on the other, and one 12-16" wire with one female quick disonnect on one end only. (You will need to file down the male end of the wire so that it is the same size as the corresponding prong on the Fog Relay)





Step 5: Crimp the Mini Add-a-Circuit to the end of the long wire. (In this picture I already added the 2 7.5AMP fuses to the mini add a circuit, but you can do it later on in the instructions).





Step 6: Plug the wires onto the Fog Relay and slide the Fog Relay back into the area behind the fuse panel, then plug three male ends into the corresponding slots of the fuse panel (the three plugs shown are the only ones used, the fourth is empty). You may have to file down the male terminals here if they don't fit. When done you should want to wrap the terminals here with electrical tape.







Step 7: Pull the last/bottom 7.5AMP fuse from the middle column (this is your ignition fuse) and replace it with your mini Add-a-Circuit (don't forget to add 2 x 7.5amp fuses to the mini add a circuit, otherwise your car won't start).



Step 8: Turn the key to the "On" position and enjoy your fogs. Make sure the Highbeams aren't on. (my emblem is missing because i'm currently black pearling it.)



Step 9: Put your car back together.



ALL INFORMATION POSTED HERE IS FOR EDUCATION ONLY. I ASSUME NO RESPONSIBILITY FOR WHOEVER MAY BURN DOWN THEIR CAR/HOUSE OR CAUSE IT TO NO LONGER WORK IN ANY OTHER WAY WHILE ATTEMPTING THIS MOD. I AM NOT LIABLE FOR ANY PERSONAL INJURIES THAT MAY OCCUR WHILE DOING THIS MOD

WARNING: Do NOT combine this mod with the highbeam mod. (The one where you take apart your steering column and ground 1 of the wires so that you can run the headlights/fogs/highbeams all at the same time. IT MIGHT FRY YOUR FUSE BOX.

Last edited by nyczzzjohn; 02-02-2010 at 08:18 PM.
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post #2 of 27 (permalink) Old 03-23-2008, 10:07 AM
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nice job!

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post #3 of 27 (permalink) Old 03-23-2008, 12:11 PM
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Nice write up. +rep!

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post #4 of 27 (permalink) Old 03-23-2008, 01:14 PM
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Well done, I've been meaning to get around to this.. Looks good.

Be sure to post pics of the BP'd Emblem too!

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post #5 of 27 (permalink) Old 03-23-2008, 06:26 PM
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Nice write up.

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post #6 of 27 (permalink) Old 03-23-2008, 08:07 PM
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Nice post with great pics. Now go wash that thing!
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post #7 of 27 (permalink) Old 03-23-2008, 08:47 PM Thread Starter
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Quote:
Originally Posted by 46&2 View Post
Nice post with great pics. Now go wash that thing!
lol winters here in NYC are rough, but I will soon. the car is starting to look more like a GGP than a black onyx.
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post #8 of 27 (permalink) Old 03-24-2008, 12:37 AM
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nice writeup. what if the second fuse in the add-a-fuse thing is not 7.5 ?
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post #9 of 27 (permalink) Old 03-24-2008, 05:51 PM Thread Starter
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I'm not sure what would happen if you put a different amp fuse in there, but to be safe just put a 7.5 fuse in there.
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post #10 of 27 (permalink) Old 03-24-2008, 08:10 PM
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Damn M#####ing. Sorry i was waiting along time ago and i even printed them out to do them 2 days ago and guess wat we tried and nothing then my brother had an idea next thing u know nothing doesnt turn on no more. no lights nothing .so i was driving with no fog lights. So then we decided to find a ground and positive so we made our own switch. instead of using the one on the steering wheel. Oh yeah by the way I was trying to do the one dat was 45 min. I dont kow wat i burned does someone know I think i burned the big fat relay behind the fuse box. Anyone know. Ill put pics up soon hopefully
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post #11 of 27 (permalink) Old 03-24-2008, 08:23 PM
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Originally Posted by IS300FANATIC View Post
Damn M#####ing. Sorry i was waiting along time ago and i even printed them out to do them 2 days ago and guess wat we tried and nothing then my brother had an idea next thing u know nothing doesnt turn on no more. no lights nothing .so i was driving with no fog lights. So then we decided to find a ground and positive so we made our own switch. instead of using the one on the steering wheel. Oh yeah by the way I was trying to do the one dat was 45 min. I dont kow wat i burned does someone know I think i burned the big fat relay behind the fuse box. Anyone know. Ill put pics up soon hopefully
what?

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post #12 of 27 (permalink) Old 03-24-2008, 08:29 PM Thread Starter
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I think he burned his fog relay in his fuse box. is300fanatic is this what happened to you?
https://my.is/forums/f90/fog-mod-gone-fried-313533/
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post #13 of 27 (permalink) Old 03-24-2008, 08:52 PM
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nice job, +rep.

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post #14 of 27 (permalink) Old 03-24-2008, 11:12 PM
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Do you guys in the USA have DRLs (daytime running lights)?

You mention not having your high beams on. This would be a great mod to in lieu of the DRLs which is the high beams on low voltage.

How would that work?

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post #15 of 27 (permalink) Old 03-24-2008, 11:24 PM
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Yes we have DRL's most of us just unplug the plug from the DRL box... Your high beams still work tho....

I'm not sure I understand your question... or statement fully.

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