Deck harness
 

Im changing my old after market deck to a new alpine one and i was wondering if i need to change the harness? The old deck is a pioneer that only reads CD, changing to a new one that reads AUX cd and usb. Do i need a new harness or would the old one work fine?

It is quite possible that a harness wasn't used in the first place but as long as its all wired up anyways I wouldn't bother buying a harness. You'll either wire direct or use the old Honda harness depending on what was done in the originally. The only time I would ever buy a harness is if the car had a factory deck or the aftermarket harness adaptor was damaged or something.

Thanks, it worked out well.