how do i install a new head unit on my car?

asdfasdfasdfasf asked:


i have a 1999 Hyundai elantra. my mom is getting a new car so i took out her head unit before she junks her car right now. i was wondering do i need any of the cords from my moms car or no? because the only thing i took out from her car was the actual head unit itself.

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