Hi, the PRND321 part of my cluster is having lighting problems.
When I initially start the truck it is very very dim, looks almost like there is no illumination at all. Then after about 10 mins or so it gets a little brighter. Never fully bright.

Any ideas?

thanks

has anyone seen this or have any ideas?

http://www.dieselplace.com/forum/showthread.php?t=400192

You should post this in Allison OEM for more responses.