Notices
LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

Re-wiring

Thread Tools
 
Search this Thread
 
Old Jan 30, 2024 | 10:14 PM
  #1  
shakotanLS's Avatar
shakotanLS
Thread Starter
8th Gear
 
Joined: Feb 2020
Posts: 8
Likes: 1
From: ny
Default Re-wiring

Hey guys, this may not even be possible, but does anyone know if it’s possible to wire my underglow to turn on when i put on the fog lights via the steering column on my 98 LS400? and if you know, maybe share with me how, idk if it’s via the fuse box or the column itself or maybe i can wire it directly to the fog lights themselves?
Reply
Old Feb 21, 2024 | 05:05 PM
  #2  
timmy0tool's Avatar
timmy0tool
CL Community Team
15 Year Member
Liked
Loved
Community Favorite
iTrader: (7)
 
Joined: Sep 2008
Posts: 7,457
Likes: 538
From: 714/949, SoCal
Default

i moved this thread from the build thread sub-forum to the general area for more traffic.

to answer your question yes you can wire it to the foglights. the easiest way is to utilize a relay so you don't use the foglights to power the underglows directly.

instead of the dash mounted light switch, you can use the + side of your foglight to trigger the coil - in other words connect 86 to your foglight positive terminal (assuming it's positively switched). the "light" here would be your underglows!


more, for negatively switched system:
https://www.electronicshub.org/relay-wiring-diagram/
Reply
Old Apr 13, 2024 | 09:35 PM
  #3  
shakotanLS's Avatar
shakotanLS
Thread Starter
8th Gear
 
Joined: Feb 2020
Posts: 8
Likes: 1
From: ny
Default i cant figure it out lol

Originally Posted by timmy0tool
i moved this thread from the build thread sub-forum to the general area for more traffic.

to answer your question yes you can wire it to the foglights. the easiest way is to utilize a relay so you don't use the foglights to power the underglows directly.

instead of the dash mounted light switch, you can use the + side of your foglight to trigger the coil - in other words connect 86 to your foglight positive terminal (assuming it's positively switched). the "light" here would be your underglows!


more, for negatively switched system:
https://www.electronicshub.org/relay-wiring-diagram/
i cant figure this out for the life of me, can i just replace a fuse with a higher capacity one? i don’t know anything about how electricity works so i’m going blind.
Reply
Old Apr 14, 2024 | 11:04 AM
  #4  
paulo57509's Avatar
paulo57509
Instructor
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Nov 2007
Posts: 1,113
Likes: 287
From: CA
Default

Don't ever replace a low amperage fuse with a higher amperage fuse.
Reply
Old Apr 14, 2024 | 11:30 AM
  #5  
shakotanLS's Avatar
shakotanLS
Thread Starter
8th Gear
 
Joined: Feb 2020
Posts: 8
Likes: 1
From: ny
Default

Originally Posted by paulo57509
Don't ever replace a low amperage fuse with a higher amperage fuse.
noted thank you
Reply
Old Apr 15, 2024 | 03:06 PM
  #6  
timmy0tool's Avatar
timmy0tool
CL Community Team
15 Year Member
Liked
Loved
Community Favorite
iTrader: (7)
 
Joined: Sep 2008
Posts: 7,457
Likes: 538
From: 714/949, SoCal
Default

if you cannot figure out the diagram you should probably let a professional handle it. there is a high risk of messing something up!
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Uzairlexus
Hybrid Technology
9
Sep 22, 2020 02:51 PM
daniel1235
LS - 3rd Gen (2001-2006)
23
Dec 3, 2015 05:32 PM
Jester6622
LS - 1st and 2nd Gen (1990-2000)
0
Sep 10, 2015 11:22 PM
OutkastxSc
SC - 1st Gen (1992-2000)
6
Apr 26, 2012 03:54 PM




All times are GMT -7. The time now is 03:39 PM.

story-0
Toyota and Lexus Join Mille Miglia For The First Time

Slideshow: A five-car lineup spanning more than five decades of Toyota performance and engineering will tackle one of Italy's most celebrated automotive routes.

By Verdad Gallardo | 2026-06-15 16:53:16


VIEW MORE
story-1
Lexus NX 350h: A Fuel-Sipping Secret Hot Hatch???

Slideshow: a quick review of the 2026 Lexus NX 350h F Sport Handling

By Michael S. Palmer | 2026-06-15 15:25:34


VIEW MORE
story-2
5 Best & 5 Worst Lexus Daily Drivers

Slideshow: The 5 best and 5 worst Lexus daily drivers

By Joe Kucinski | 2026-06-15 11:14:58


VIEW MORE
story-3
Top 5 Hottest Lexus & Toyotas in 2026 (Hardest To Buy)

These five Lexus and Toyota models are the most sought-after on the market right now.

By Brett Foote | 2026-06-15 10:47:52


VIEW MORE
story-4
2026 Lexus IS 350 F Sport Review: The Last of Its Kind Still Rocks

Slideshow: the 2026 IS 350 isn't all that new, and that's why we love it!

By Michael S. Palmer | 2026-06-04 14:35:23


VIEW MORE
story-5
Top 10 Most Confusing Things Lexus Has Ever Done!

Slideshow: 10 most confusing things Lexus has ever done.

By Joe Kucinski | 2026-06-04 09:40:55


VIEW MORE
story-6
2026 Lexus ES Review: Lexus Re-Embraces Founding Principles

Slideshow: Our First-Drive Review of the 2026 Lexus ES!

By Michael S. Palmer | 2026-05-29 20:30:16


VIEW MORE
story-7
10 Lexus Bargains That are Cheaper Than a New Toyota RAV4

Slideshow: 10 Lexus bargain that are cheaper than a new Toyota.

By Joe Kucinski | 2026-05-20 10:28:20


VIEW MORE
story-8
8 Weirdest Things Lexus Has Ever Built

Slideshow: From hoverboards to luxury yachts, these are the strangest projects Lexus has ever attached its badge to.

By Verdad Gallardo | 2026-05-16 11:34:36


VIEW MORE
story-9
10 Lexus Designs That Have Aged Like Fine Wine

Slideshow: Some luxury cars chase trends, but these Lexus models look better now than they did when they first rolled into showrooms.

By Verdad Gallardo | 2026-05-06 17:58:29


VIEW MORE