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

1993 LS400 new gauge cluster affects speaker

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Old 08-17-23, 07:52 AM
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creaser64
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Default 1993 LS400 new gauge cluster affects speaker

I just replaced my faulty gauge cluster with a rebuilt on sourced from Taninelectronix. New cluster works fine, but now I suddenly have distortion in the passenger side mid range-speaker. Could there be a connection between the new cluster and the sudden distortion in the speaker?. If it is just a coincidence, could anyone recommend a good replacement mid-range set of speakers? I have searched this forum and didn't find any info. Thanks.
Old 08-17-23, 05:13 PM
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Yamae
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As far as I check wiring diagrams, there isn't any signal connection between the gauge cluster to the amplifier. But there are common12V power lines such as ACC, IGN12V and EVER 12V. Did you replace the gauge cluster after disconnecting the battery and waited enough until the charged capacitors were fully discharged?
Old 08-18-23, 07:27 AM
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creaser64
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Hi, thanks for your response. I had my mechanic install the rebuilt cluster, so I dont know what his procedure for doing it was. The cluster works perfectly, which leads me to believe that the 30 year door speaker needs replacing. I will get a couple of new mid range speakers installed and see if that does the trick.
Old 08-18-23, 08:36 AM
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400fanboy
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I replaced the front speakers in my car at different times to the rear speakers. I could move my head throughout the cabin and experience the different sound stages from each speaker.

The audio quality difference was *astronomical*. I couldn't believe how much better the new speakers sounded (some middling Alpine loudspeakers, they are nothing special)

And at that time, my speakers were only 20 years old, with a blown drivers door speaker. After a few decades, the cones of the speakers get worn out and physics just takes its toll. Nothing is immune. The audio system is quite good - but the quietness of the car really is doing a lot of heavy lifting here. Remember the saying... "your speakers are only as good as the room".

It seems strange to have the speaker fail at the same time as the dashboard work. Maybe there was a power surge which caused the speaker to pop, maybe your mechanic was blasting death metal 😂.

Last edited by 400fanboy; 08-18-23 at 08:39 AM.
Old 08-18-23, 10:05 AM
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paulo57509
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Seemingly unrelated electrical problems seem to occur when vehicles age. Casual observations, it seems to be rather chronic with our cars. It just adds to the head scratching when trying to diagnose issues.

After removing and replacing the hush panel under the steering column and not disturbing anything else, my fuel gauge started to do this:



Yes, step one was disconnecting the battery. Turns out to be the gauge and not the sending unit in the tank. It's getting to the point where I cringe anytime I have to unplug anything.
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