Yes, keyless entry can be installed on a 2000 Jeep Wrangler, but it's not a simple plug-and-play affair. You'll need an aftermarket kit specifically designed for that year and model. The installation will require some wiring and potentially some drilling or modification to the vehicle's door panels and/or dash to accommodate the components.
You'll find various kits available online and at auto parts stores, ranging in features and price. Some kits are more involved than others, so consider your mechanical aptitude before attempting the installation yourself. If you're not comfortable with car wiring and electrical work, it's best to have a professional installer do it.
