Where would you find the kill switch on a 2004 jeep rubicon?

There isn't a single, universally located "kill switch" on a 2004 Jeep Rubicon (or most vehicles, for that matter). A "kill switch" is typically an aftermarket addition. People install them in various locations for various reasons (security, racing, etc.). There's no standard place for one.

To find a kill switch, you'd need to:

* Check common aftermarket installation points: Under the dash, near the steering column, or even hidden under the hood are possibilities. Look for a switch that's out of place compared to the factory components.

* Ask the previous owner: If you recently bought the Jeep, they are the best source of information.

* Look for aftermarket wiring: Trace any unusual wiring harnesses; they may lead to a hidden kill switch.

Without any prior knowledge of modifications, it's impossible to say where, or if, a kill switch exists on your specific vehicle.