My zj decided to break down in the school parking lit yesterday. Wouldn't turn over and lights and radio didnt work so I figured it was the battery and had it checked. Its a yellowtop and they said its still in perfect condition. Before I go and rip the starter off does anyone know anything else that could be wrong? Thanks guys

 

if theres no juice anywhere cables would be a starting place

 

Im getting power to the radio untill I try to crank, then it clicks and everything shuts off and I have to unground then re ground the battery to get it to work again

 

The starter wouldn't stop the radio and lights from working.
Check grounds and power connections.

 

Alright Ill drive up there and double check. I figured the starters bad and was draining all the power from the radio and stuff but I guess not

 

I replied as you were adding info. Your OP seems more like no power at all inside.
If it has power then cuts out and still no start, I'd lean toward starter solenoid.

 

Alright thanks guys

 

Alright so I took the starter to advance and it still good. Any otger ideas?

 

Bad grounds? Bad relay?

Do a search for Dukie's write-up on how to troubleshoot starting issues with no crank, it's a great help (used it just a week or so ago).

 

clean your battery cables make sure they are tight... a loose battery cable will do the same thinng you have a problem with

 

X2, actually happened to me today after pumping my tires, + connector was semi-loose.

 

Update:
Turns out the battery teminal cable was corroded about a foot down into it...?
Cut open the rubber and soldered it together and works better than ever now hah