These leads plug directly into your head unit. Replacement Head Unit Lead which can be used when the original lead has been damaged or lost and come supplied to ISO connection. 22 Pin These lead is designed to fit the following Kenwood units: Series DDX : DDX52RY DDX54R DDX5022 DDX5022Y DDX5024 DDX5026 DDX5054 DDX5056 DDX8022BT DDX8024BT DDX8026BT DDX8026BTY Series DNX : DNX520VBT DNX521BT DNX4210BT DNX5210BT DNX5220 DNX5220BT DNX5240 DNX5240BT DNX5260BT DNX7210BT DNX7240BT DNX7260BT DNX8020BT DNX9210BT DNX9240BT DNX9260BT Series KVT : KVT-54DVDR KVT-524DVD KVT-526DVD KVT-554DVD KVT-556DVD KVT-729DVD