Hi I just picked up a 1992 YJ 2.5 5Sp. All the vacuum lines were a mess and I was able to fix them. I am having an issue with the 4WD. The front axle was not engaging. I found that to the lines and now the axle will lock in and out. Transfer case is shifting properly into all gear ranges as well. For some reason it is not engaging the front drive shaft? I have 2wd in all positions including low. The dash indicator will not light and it is hooked up also. Any help would be appreciated. Ive owned a few CJ's and YJ's and I am pretty good mechanically but this one has me stumped. Thanks in advance.