If your JLG Lull or Skytrak telehandler's transmission range selector is acting up, this XYZIL replacement controller might be the fix. This is a 12-pin, 4-speed transmission controller (part number 8223049, also crosses to 0501211463 and others) that mounts in the cab under the steering wheel. It lets the operator select forward/reverse and choose the gear range. It's compatible with a bunch of models – like the JLG Lull 1044C-54, 6036, 6042, 10054, 10042, 8042, and early Skytrak models including the 4266, 4270, and 4290 telehandlers. It's designed to work with the DT06-12S plug. IMPORTANT: Please double-check your machine's exact model, serial number range, and transmission type before ordering to ensure this is the correct part. This is a critical component, so getting the right fit is a must. Save time and money compared to going through a dealer. Get your equipment shifting smoothly again.