Head lights work
takes no key at all to make HL work
do they,???????????
if not you blew a main fuse, if the battery is new, and charged.? 12.6v dc rested.?
if the battery was installed backwards, oops....a....daisy....boom.

im sure something has power, but if wrong
then you blew up many fuses....
this is a easy find, total deads are,....
so easy.
5 min work with a volt meter, and bingo.
click TJ at 1st link below, then wiring, bingo
posted over 300 times. now......

there are 8 main fuse, how'd you blow 8, ive no clue.?
the must easy path on all cars is head lamps.
but fuse 10 runs head lamps via a circuit breaker
Fuse 10 is hot all the time.
if that's hot and fuse cb is hot, the Heads work.
8w-50 page, covers that. Cb=circuit breaker.

my guess battery in backwards but head lights work backwards, but not much else.
do parking lamps work...????
i can list like 30 lamps ,
radio, blinkers, brake lamps.

My guesses will be bad.
if not usa car?
if export car?
or if it has DRL lamps.?
but the simple HL lamps are just 2 fuses and an switch, USA.
free to read..... its there....
http://www.morris4x4center.com/knowledge-base/index.htm?utm_source=cj#service


no crank is easy if your battery is charged
head lamps work and park lamps and key on cluster warnings cluster lamps, all glow,
if the warnings are dead, there is no power to the key switch, blown blow fuses.

this covers all ways.
http://jeepdied.com/no-crank.html

"....nothing."
really 100% nothing works, or glows?
inside and outside car?
if true, battery you got was old
the battery , has date code, is it over 3 months old?

Do a voltage drop test on starter circuit , Bad positive cable or negative cable . Starter Voltage Drop