headlight wiring, hi and lo beam

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=108130
Printed Date: June 08, 2024 at 2:26 AM

Topic: headlight wiring, hi and lo beam

Posted By: isoking
Subject: headlight wiring, hi and lo beam
Date Posted: October 13, 2008 at 7:12 PM

Hi,
I have some driving lights that i want on all the time the lights are on., the only problem is i hooked them to the low beam, when i turn on high beam the low beam turns off. Is there a way to hwire them to one relay so i dont have to use 2 relays.

thanks
stuee

Replies:

Posted By: i am an idiot
Date Posted: October 13, 2008 at 7:30 PM

Below assumes that you used terminal 85 as ground for the relay.

You need to use 2 diodes to accomplish your task. Both banded ends of the diode go toward terminal 86 of the relay. Low beam hot wire to one diode (non banded end) High beam hot wire to the non banded end of the other diode.

1N4001 or 1N400X X=2 through 7 will be a suitable diode for this task. RadioShack does sell them. Pack of 2 for 99 cents

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