4x4 High working fine...4x4 Lo working no light

[sroeser01]

any one no what causes this... moving north soon and will need 4 LO. not sure if its a transfer case issue or maybe electrical, switch, blown fuse? new at all this any help would be awesome!! the 4 wheel drive works fine in both 4 hi and lo but the indicator light goes off in lo when it didnt used to...have just recently installed bigger wheels(15/8 rock crawlers) and 31x10.5 BFG AT KO tires and warn manual hubs. any one else have this happen? Thanks for any help!!

[Slartibartfast]

Looking at the Factory Service Manual I see a couple of electrical connections to the transfer case. One of these might be faulty, or contacts somewhere could be dirty. That's all I can think of.