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Old 07-14-14, 10:52 PM   #1
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Default LS 400 instrument cluster

I have a 1990 LS400 and the instrument cluster is going wacky. First off the speedometer is reading 15 mph slower than actual speed. Also the indicator light that says there is a burned out tail light is on but all of the tail light bulbs are working. When I am driving the car and step on the brake pedal the brakes grab slightly and the "R" lights up on the shift light column and the dash light turns off. I am guessing I need to replace the instrument gauge cluster but would appreciate any input if anyone else has experienced this.
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Old 07-15-14, 06:15 AM   #2
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Have you tried searching the forum? I see this is your first post..... You might want to post this in the actual LS400 thread and not the "Build" thread.
AKA "Dirty Mike"

(93 LS4) - 5spd swap, Megan coils, 95+ big brakes with Goodridge stainless brake lines. S&S Headers with a custom exhaust, Motegi Touge's 18x9F and 18x10R, Welded diff, and vortech/procharger coming soon..... Best 1/4 mile so far 14.9 @ 97
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Old 07-15-14, 11:37 AM   #3
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TaninAutoElectronix TaninElectronix Tanin Auto Electronix taninautoelectronix

We can fix all of these problems or sell you a good working cluster.

The gear shift assembly on the transmission triggers the gear lights so I would start there with that problem. The speedometer problem is the cluster.
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