2004 Jeep Wrangler wont start - turn the key and no starter, replaced battery still won't start

SOURCE: my 91 jeep won't start...

The Starter relay is bad.

SOURCE: 2006 Jeep Wrangler won't start

First, make sure you can turn the engine by hand. If you can't then the starter can't turn it either. Have someone else turn the key and look for the source of the click...may be a relay. Go over the starting circuit with a volt meter. Check for power at the starter main terminal and then with the key turned to "start" check for power at the trigger terminal on the starter. Check battery voltage and check relay operation.
You have a neutral safety switch on the transmission if its an automatic and a clutch switch if it's a stick. Check them as well. Make sure battery grounding on fender and block are also clean and secure.

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SOURCE: 2004 jeep wrangler unlimited wont start ,4.0l auto

Nuetral safty switch, Starter solenoid.
Do you have antitheft?
The ground for the starter relay may be computer controlled. Lee

SOURCE: 1992 Jeep wrangler, 4.0L HO, manual transmission,

you have an ignition voltage problem or ignition box failure.

SOURCE: 2000 jeep wrangler will not start from the key

It sounds like you have a bad neutral safety switch or your linkage is worn enough that it's not registering properly.