If your 2005 Toyota does not have a built-in aux port, you can still connect an external audio source by using a cassette adapter or an FM modulator. These devices allow you to connect an iPod or other portable music player to your vehicle's audio system.
Here's how to identify if your 2005 Toyota has an aux port:
1. Look for a 3.5mm jack input labeled "AUX" or "Audio In" on the front panel of your car's audio system.
2. Check the center console or glove compartment for an AUX input jack.
3. Refer to your vehicle's owner's manual or documentation to see if it mentions an AUX port.
Please note that the location and availability of an aux port may vary depending on the specific model and trim level of your 2005 Toyota. If you can't find an aux port, you can consult with a Toyota dealership or a car audio specialist for assistance in connecting an external audio device to your vehicle's audio system.