Portable DVD player

Hi everybody, noob here. I got a question and maybe it's the dumbest thing but I know nothing about how to do this or if it's possible. I have a portable DVD player and I was wondering if there's any way to connect it to my car stereo. I have a pioneer deh-p6300. I don't want to leave it permanent in the car or anything I just want to know if there's a way to connect the sound so I can hear movies through my system instead of the tiny puny speakers of the portable dvd, you see I sit and wait a lot in the car sometimes between classes and I get bored. Any help appreciated.
Thanks