LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

1995 LS400 Pioneer radio backlights

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Old 03-02-19, 08:16 PM
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JasonSArra
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Default 1995 LS400 Pioneer radio backlights

Hey guys, I need help figuring out which terminal on the wiring harnesses to the radio itself turns on the backlights. The radio itself works. Just need to get the lights on. The radio is outside of the car. I have been using a wiring diagram but it does not show the location of the backlight terminal. Any ideas?
Old 03-02-19, 10:54 PM
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KKOG
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You sure its not this common problem?

https://www.clublexus.com/forums/ls-...ust-bulbs.html
Old 03-02-19, 11:05 PM
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JasonSArra
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I did see that link yes. I got my unit from a salvaged LS400 for $10 so I have no idea if the bulbs are good or not. That's why I am trying to figure out which wires from the wiring harnesses turns on the backlights.
Old 03-05-19, 11:52 AM
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timmy0tool
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why not just plug it into the car and let the car turn on the backlighting for you?
Old 03-05-19, 09:27 PM
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KKOG
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Can these links be of any help?

https://lexus-doc.ru/ileaf/lex97rm/9...audsy/insp.pdf

https://faceitsalon.com/lexus-stereo-wiring-diagram/
Old 03-06-19, 10:20 AM
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plexus914
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In essence it appears to be a couple of dry solder joints that are causing all the problems and the fix is relatively easy and straight forward. Check PDF
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