Originally Posted by Kansas

Here is a link to a page that has other links to instructions on how to remove and disassemble the instrument cluster on a 90-92 LS400: http://www.lexls.com/tutorials/electrical/

The odometer on the 90 LS I had broke at about 120,000 miles -- it's a very common problem on a 90-92 LS. It's been over ten years ago but I remember that a new replacement odometer was pretty cheap. I had a repair shop install the new odometer and I think the cost of parts and labor was less than $100 -- must have been pretty easy. It is a federal requirement to put a sticker on the door jam that shows the mileage at which an odometer is replaced.

Attached is a photo of the old odometer and the box the new one came in.