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puddle lights?

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Old 10-05-12, 08:38 PM   #1
cvES300
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Default puddle lights?

hi guys, i want to install puddle light on my es but I want it to fade out like my dome light do. can anyone tell me where to wire them up to?


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Old 10-05-12, 09:15 PM   #2
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Are you using LEDs or incandescent?

You would wire them up to any circuit that has the fadeout, like the interior lights. I haven't looked at the wiring diagram for those, but usually the lights are wired to power and the ground side is controlled by one of the ECUs like a body controller.

The issue you might have: this is an old car, so it probably has lighting not designed for LEDs. The fadeout circuitry in whatever controller might not be compatible, dimming an incandescent light used to be done in a way that does not work for LEDs (voltage vs. duty cycle) though I am not sure how the fade works in the Lexus.

Conversely if you use an incandescent light the power draw is significant, much more than an LED. If you add it to an existing "fadeout" circuit, it could overload the controller and fry some circuitry.
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Old 10-05-12, 09:19 PM   #3
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Im planning on using LEDs. I tried wiring them from the dome fuse but I would get the reverse effect. but if I go straight from the dome it works just the same as the dome. so that's where I'm a little confused.


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Old 10-05-12, 09:21 PM   #4
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happy_es3 did this mod but I would like to know how exctaly he did it.


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Old 10-05-12, 09:42 PM   #5
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Quote:
Originally Posted by Power6 View Post
Are you using LEDs or incandescent?

You would wire them up to any circuit that has the fadeout, like the interior lights. I haven't looked at the wiring diagram for those, but usually the lights are wired to power and the ground side is controlled by one of the ECUs like a body controller.

The issue you might have: this is an old car, so it probably has lighting not designed for LEDs. The fadeout circuitry in whatever controller might not be compatible, dimming an incandescent light used to be done in a way that does not work for LEDs (voltage vs. duty cycle) though I am not sure how the fade works in the Lexus.

Conversely if you use an incandescent light the power draw is significant, much more than an LED. If you add it to an existing "fadeout" circuit, it could overload the controller and fry some circuitry.
My Interior LED's fade out just as the incandescent bulb did...
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Old 10-08-12, 09:04 AM   #6
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My Interior LED's fade out just as the incandescent bulb did...
Good to know so it should work fine.

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Originally Posted by cvES300 View Post
I tried wiring them from the dome fuse but I would get the reverse effect. but if I go straight from the dome it works just the same as the dome. so that's where I'm a little confused.
The fuse in the box may just be a supply, the controller is likely controlling the ground side of the circuit to fade, you can't just ground your LEDs anywhere it needs to be on the same circuit...

OK let me check the service manual...the wiring is pretty confusing there, the "dome" fuse supplies a number of different lights and there are a few diodes in line. It does supply the dome light, the other "ground" side of the dome (and the ring around the ignition switch) is wired to the Integration Relay. That unit will control the fade. The easiest way to get the same effect is to wire whatever you want to behave the same, to the dome light wires.
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Old 10-09-12, 10:43 AM   #7
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yeah that's what I figured. so now I just have to Find the ground to tap into


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Old 10-09-12, 03:59 PM   #8
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yeah that's what I figured. so now I just have to Find the ground to tap into


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Ground could be the door sensor located be the inside door jams..its a sensor locates on inside of each door. Thats what i used for footwell LEDs
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Old 10-09-12, 03:59 PM
 
 
 
 
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2012, 350, car, club, ct200h, dome, lamps, lexus, light, lights, puddle, relay, rx, side, switch

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