IS - 1st Gen (2001-2005) Discussion about the IS models up to the 2005 model

Aftermarket HID Question

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Old 01-06-12, 02:55 PM
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2JZSHOTTAZ
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Question Aftermarket HID Question

If you have aftermarket HIDs and leave the light switch on "auto" will they automatically turn off or stay on, when you turn off the car?
Old 01-07-12, 09:17 AM
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k954triniz
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I have the exact question dude .... A few pplz told me they hVe to be wired up in a certain way
Old 01-08-12, 01:50 PM
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lookalike
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This all depends on how the HIDs were wired when they were installed.... if they are wired to the factory wiring or a power relay is hooked up to the factory wiring they will do exactly what your factory lights did. Which means auto turn on/off.

Simple test how they are wired, if already installed of course:
1.turn on car (make sure to close door)
2. turn lights on (not auto just on)
3. turn car off (open door and get out)
4. close door and lock the car ( yes i know you left the lights on, but car has to detect that you "exited" the car so it will turn the lights off automatically.)
5. wait for 1-2 minutes and see if the lights turn off automagically.

the reason you leave the light stalk in on is so u can test in daylight. The car has a override that turns off headlights when you leave it on, to save battery of course.
Old 01-08-12, 05:59 PM
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KING 2JZ
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Why would anyone want to wire them differently if they are all plug and play?
Old 01-09-12, 09:54 AM
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DonCorleone
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What do you mean aftermarket HID? Bulbs? The IS300 (USDM) comes standard with HIDs. If you replaced the stock HID bulbs with aftermarket HID bulbs, everything would work as normal. If you replaced the ballast with an aftermarket ballast, it would work fine as well as long as you wired it up the same way.

Now lets say you added an aftermarket HID kit to something like the fog lights, which did not come HID from the factory, you can do it 1 of 2 ways, plug in the HID kit to the stock harness OR plug the kit into the harness with a relay going to the battery, the kit would then get power directly from the battery but the signal from the switch would still be what controls when the lights come on or off. Either way you would connect to the switching system so it would function as it should as well.
Old 01-16-12, 09:35 AM
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2JZSHOTTAZ
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Originally Posted by DonCorleone
What do you mean aftermarket HID? Bulbs? The IS300 (USDM) comes standard with HIDs. If you replaced the stock HID bulbs with aftermarket HID bulbs, everything would work as normal. If you replaced the ballast with an aftermarket ballast, it would work fine as well as long as you wired it up the same way.

Now lets say you added an aftermarket HID kit to something like the fog lights, which did not come HID from the factory, you can do it 1 of 2 ways, plug in the HID kit to the stock harness OR plug the kit into the harness with a relay going to the battery, the kit would then get power directly from the battery but the signal from the switch would still be what controls when the lights come on or off. Either way you would connect to the switching system so it would function as it should as well.
With aftermarket bulbs and ballast (plug and play ones) , tested last night worked like the stock ones, lights turned off after about a minute
Old 01-16-12, 05:32 PM
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mpecilunas
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a buddy of mine has after market hid's on his gs and the auto function quite working
Old 01-19-12, 07:16 AM
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Jim2jz
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Mine does not turn off if its on AUTO even with the key out etc.... Thats a dissapointment LEXUS :/. All my other cars do that.
Old 01-19-12, 07:30 AM
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01LEXPL
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Wire it up as-is and they'll do it. My Es300 does that, my dad's RX does that, any lexus i've driven does that. It's a relay that mates with the stalk & wiring.
Old 01-19-12, 07:52 PM
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altezzaguy
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I have after market hid low beams, as well as fog lights and the both still work with the auto function. He probably wired em wrong.
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