Car stereo connectors used to typically use standard, off-the shelf connectors, which made it easy to make new harnesses, adapters to plug multiple different head units into a car easily, etc.. Unfortunately, over the years they have mostly gone to custom versions, likely to shave a few cents off the cost, just like everything these days, it seems.
Those are most likely based on a Molex / TE / AMP / Hirose design but I don't see any 14+2 versions in any of their standard catalog items, so it is probably a custom version.
The nice thing is, you DO have a housing! The best thing to do is pull one of each sized contact, figure out what
those are, especially since even similar contacts will usually fit in another manufacturer's similar housing. Just buy the contacts, make your own cable harness, and stick them in the housing you have.
I keep a nice bin of all sorts of random contacts from previous projects and always buy extra pins and contacts when I buy them for something just so that I have extras for repairing and modifying other connectors. I'm sure I could find something that would fit and clip into that housing for your application in my stash box.