which manual hubs kit do i need

I have a 1990 broncoII that the 4 wheele lights wont turn off and i have tried to back up 10 feet and turn them off and still it is in 4 low. i have automatic buttons and i am planing to switch to manual hubs to see if that fixes the problem. auto zone has a oem kit that $112 and a $36. 112 on says that if i have a oem automatic hubs i need the kit but the other one is just the mile marker hub kit. do i need the $112 or can get by with the $36