Just curious are some Pioneer wiring harnesses for decks universal? In other words Will my DEH-P6300 harness plug into a let's say a DEH-P7200 or something? Thanks...

 

that spcecific deck u mentioned, p6300 and all the 600 models as far as i know have a diff harness from all the other pioneer decks. i found out the hard way when i tried to find harness for p6400 and not a single pioneer harness fit the deck. i had to go on ebay and look specifically for the p6400 harness. i believe all other pioneer decks have same harness.