I have a 2001 MK2 Fait Punto and an In-phase car stereo. I have just installed two 6x9 speakers in the parcel shelf and ran the wires to the head unit but how do I actually connect them to the head unit? My ISO harness doesn't have any sort of clips so I'm holding the wires in there with a bit of blue tac. Can I buy clips to put into the ISO harness to hold the wires? Or can I forget the ISO harness and just connect them to the head unit using spade connectors?