How to Diode to Prevent Feed Back?
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=113547
Printed Date: June 10, 2024 at 2:43 PM
Topic: How to Diode to Prevent Feed Back?
Posted By: lam13
Subject: How to Diode to Prevent Feed Back?
Date Posted: May 02, 2009 at 10:09 AM
Well, I have a Jeep Grand Cherokee SRT8 that does not come with rear fogs install. I working on a T-Harness to wire the rear fog lights from the tail lights.
when I connect the harness, both the tail light and the rear fog light turn on but both come on like if I was pressing the brakes.
My question is how and where can I still a diode to prevent feed back? If anyone have a diagram it would help me a lot.
Thanks for any help..
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S1l3nt
Replies:
Posted By: i am an idiot
Date Posted: May 02, 2009 at 4:28 PM
I really do not understand what your question is, but the above picture may help you understand how a diode works. Maybe if you post a diagram of how you have them connected, we can figure out where the diode should go.
Posted By: lam13
Date Posted: May 03, 2009 at 1:34 PM
    These are the pictures on how I want to connect the t harness onto the tail lights, Thanks for any help... Luis ------------- S1l3nt
Posted By: i am an idiot
Date Posted: May 03, 2009 at 1:52 PM
That harness is simply paralleling the new socket with the other bulb. I still have no idea when you want the fog lights to come on.
Posted By: lam13
Date Posted: May 03, 2009 at 2:21 PM
I want to use the fog light as running light and also as a turn signal with the tail light.
I saw some guy with it and when he hits the brakes both the tail lights and the fog lights come on to full lit.. But he doesn't wanna help me because he is selling the harness and I want to do own without paying for it.
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S1l3nt
Posted By: KarTuneMan
Date Posted: May 06, 2009 at 7:53 AM
lam13] wrote:
want to use the fog light as running light and also as a turn signal with the tail light.
I saw some guy with it and when he hits the brakes both the tail lights and the fog lights come on to full lit.. But he doesn't wanna help me because he is selling the harness and I want to do own without paying for it.
Is this legal? -------------
Posted By: lam13
Date Posted: May 06, 2009 at 7:30 PM
I don't see why this can be ilegal, I just want to add an extra break light and turn signal light.
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S1l3nt
Posted By: benmerithew
Date Posted: July 26, 2009 at 9:33 PM
White light to rear is illegal in i think all states, thats why if someone takes out an amber turn signal bulb in the back and replaces it with just a regular bulb he gets pulled over and given a fix it ticket.
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~*Ben*~
Posted By: lam13
Date Posted: July 27, 2009 at 6:03 PM
That's not a white light, its a LED RED LIGHT, that I want to use as a running light in the rear FOG LIGHT HOUSINGS...
LUIS
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S1l3nt
Posted By: KPierson
Date Posted: July 27, 2009 at 8:58 PM
How much is the guy selling the harness for?
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Kevin Pierson
Posted By: benmerithew
Date Posted: July 27, 2009 at 9:37 PM
lam13] wrote:
That's not a white light, its a LED RED LIGHT, that I want to use as a running light in the rear FOG LIGHT HOUSINGS...
LUIS
O didnt catch that part. Well i think as long as its dim, like ur tail lights would be then when u hit the brakes it lighted up brighter, then i dont think it would be illegal, but i dont think ur rear running lights can be brighter than ur break lights. U might check with the local Law just to be safe. Sure hate to get it all done and find out theres a nice fix it ticket waitin for you. ------------- ~*Ben*~
Posted By: zybeon
Date Posted: August 28, 2009 at 11:56 AM
What you have to do is add diodes to both the turn light wire and the brake light wire. Use a pack of them from radioshack. Make sure the white line is on the side leading to the light.
Posted By: zybeon
Date Posted: August 28, 2009 at 11:59 AM
looked at your pics again, are you sure yo are using a 3157 2 circuit light? those things should be already configured for voltage polarity or you just got a cheap one.
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