Headlight wiring
Printed From: the12volt.com
Forum Name: Lights, Neon, LEDs, HIDs
Forum Discription: Under Car Lighting, Strobe Lights, Fog Lights, Headlights, HIDs, DRL, Tail Lights, Brake Lights, Dashboard Lights, WigWag, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=60277
Printed Date: May 15, 2025 at 12:15 AM
Topic: Headlight wiring
Posted By: sparkyspider
Subject: Headlight wiring
Date Posted: July 28, 2005 at 1:01 PM
I want to tap into my highbeam wiring. At my headlights the high beam hot is RED / w yellow stripe. I cant find that redw / YELLOW anywhere under my dash,even on the headlight switch. Why does the factory change the wire color in the harness somewhere? Anyone know how I can find my highbeam wire under my fash,( so I dont have to drill a hole in my firewall,and run a wire from the headlight itself? Its a 2003 Toyota Celica . Thanks
Replies:
Posted By: Clif
Date Posted: July 29, 2005 at 2:08 AM
the use of a multimeter will help, set to VDC, then ground one lead, then look for a wire that shows voltage when you turn your high beems on and no voltage when there off.
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hmmm.... was that the right wire?
Posted By: spittin2rock
Date Posted: August 01, 2005 at 12:20 PM
If you don't mind me asking why do you need to tap into your high beams. If you're trying to power something with your high beams then I would just use the fuse box
Posted By: sparkyspider
Date Posted: August 02, 2005 at 3:49 PM
I need to tap into my high beam wire , because, on a Toyota Celica, the low beams stay on when the high beams are put on,and Im installing foglights,and want to run a wire from the high beam wire to the fog relay to turn off the fogs when the high beams are put on.
Posted By: Mad Scientists
Date Posted: August 06, 2005 at 12:54 PM
There's gonna be a wire from the passenger compartment to the engine compartment anyway.. so locate the foglight relay under the hood and trigger from the headlight wire. It's better to run as short a power wire as possible for headlights and driving lights to reduce voltage drop. Jim
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