Fading Domelight
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=5067
Printed Date: August 09, 2025 at 6:15 PM
Topic: Fading Domelight
Posted By: 91blaze
Subject: Fading Domelight
Date Posted: November 03, 2002 at 12:13 AM
i have a 91 blazer and was wondering how/where i would wire a capacitor or if thats even what i would use, to make my domelight fade out like on some newer cars when the door is closed or the light is turned off. thanks for your replies.
Replies:
Posted By: malucyk
Date Posted: November 03, 2002 at 1:11 AM
A capacitor has nothing to do with it. You need some sort of electronic variable resistor. Something like that.
Posted By: Velocity Motors
Date Posted: November 03, 2002 at 7:28 AM
Also if you put a fade like this it will false the alarm system when armed right after you exit the car.
-------------
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: 91blaze
Date Posted: November 03, 2002 at 10:22 AM
but dont most alarms have some sort of delay time for cars with this feature and so the car can settle? i have a python 1500esp. but could anyone tell me how i would go about doing it anyways? i dont see how a capacitor wouldnt work. thanks for your replies.
Posted By: RoundtheBend
Date Posted: November 04, 2002 at 2:13 PM
Your application may vary but I was told by the dealer that the dimming domelight on a 2000 focus is part of the illumination control module. Perhaps someone somewhere has a wiring diagram of this part so we can all see how to do it. Hope that helps somewhat. :) -Erik
Posted By: bradleonard
Date Posted: November 06, 2002 at 1:29 PM
I have also been wondering how these fading domelights work. I was just thinking about getting whatever circuitry makes it happen out of a vehicle that has it, and then install it in my 92 Toyota truck. Would that not be the easiest way to do this? Brad ------------- werd
Posted By: bozoka45
Date Posted: November 07, 2002 at 3:19 PM
I've been looking to do the same thing. I'm surprised there just isnt some sort of module that you can buy from Radio Shack or something. I can see why you would want to use a cap, and I'm also wondering why placing a small cap on there wouldnt work.
Posted By: bozoka45
Date Posted: November 09, 2002 at 3:05 PM
Posted By: Raphael
Date Posted: November 10, 2002 at 1:25 PM
That site you suggested was pretty interesting some cool stuff there. I will definitely be checking it out again thanks alot pal. PS: The schematics were on point as well I think I 'll try fade away type circuit in my car as well. ------------- DNR
Posted By: RoundtheBend
Date Posted: November 14, 2002 at 6:41 PM
For those of you that don't want to bother trying to build your own circuit...
https://www.serioussubaru.com/electrical/lights-up/index.htm -Erik
Posted By: bozoka45
Date Posted: November 14, 2002 at 9:25 PM
I saw that. It says Miata, but do you think that it matters?
Posted By: RoundtheBend
Date Posted: November 16, 2002 at 12:05 PM
I highly doubt it makes a difference as it looks like there are only three wires! If I weren't saving money for a new engine for my car, I'd probably buy one myself since I like that fading domelight. -Erik
Posted By: bozoka45
Date Posted: November 16, 2002 at 1:47 PM
I tried ordering one, and the total came out to nearly 50$ with shipping. They emailed me and said it was on backorder for 2 weeks, so I told them to cancel. I want to make one with parts because I'm sure it would be alot cheaper, I just dont know what parts to buy at Radio Shack or some other electronic store (Home Depot maybe?). If anyone could help out, again, Thanks.
Posted By: RoundtheBend
Date Posted: November 17, 2002 at 6:02 PM
$50 shipped? That's insane! I would think you could tell them which IC you wanted at Radio Shack and they could at least cross-reference it. I'm just lazy The transistor looks like a pretty common transistor which I would think Radio Shack would also have.
Posted By: bozoka45
Date Posted: November 17, 2002 at 6:04 PM
If you figure out what parts to buy over at Radio Shack (part numbers), please post them for me. I tried figuring it out, but didnt get far. Radio Shack has a limited number of transistors and what not.
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