Are there any relatively inexpensive solutions for changing an 96′ jeep cherokee with part time 4 wheel drive, to full time?

I know what full time and all wheel drive do but what does part time 4×4 do? Does it lock all the wheels up so that all wheels are spinning at the same time?

I have the Command Trac part time 4WD system. The 4WD does definitely work, but the indicator light in the instrument cluster does not illuminate. I have taken out the inst cluster and checked the bulb, and it’s good. The connection at the transfer case is intact with no apparent broken wires (but I have [...]

I have a Jeep liberty and I would like to know how do I turn on the 4×4 full time ability. When I play around with the arm I have the 2HI, 4×4 part time, 4×4 low. I know that there is a 4×4 full time option, I just don’t know how to use it! [...]

IM looking to get A jeep grand cherkoie 2003 my question is bout the 4×4 it has 4×4 part time 4 hi and 4 low could someone plz explain it to me thanks and also can i shift into 4×4 whn im driving or does it hv to b in netural thank u again