does the CDL Light on the instrument cluster definately come on at startup? and if so, will it come on at startup even if there is a problem with the CDL system? will the other 2 Diff lights on the instrument cluster come on at startup even if you don't have factory lockers? will a problem with the CDL system trip an error code? i'm trying to troubleshoot my CDL not locking in low on a stock 93 (without diff locks) i thought it might just need to warm up, sine the PO never used it, but now i'm thinking it may be broke. i'm starting with the CDL light on the dash because it doesn't light at startup. the fuse (14) looks fine and the connections on the t-case look fine. :'( any help appreciated.