old school alpine ai net input? help, thanks!

[expo5.0 10+ year member]

what cable do i need for aux in on a older than 2001 alpine ai net hu?

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[blue93corsica 10+ year member]

kca-121B

 

[havoc97 10+ year member]

you sure?

i have a few of the $7 plus shipping ones on ebay and although they are ai net and fit the hu, they aren't compatable for some reason. I've also read that something changed in 2001 or 2002 about ai net...

does this make sense?