sounds like ur having a bitv a ball ache with it.
wel...as far as i'm aware from all the kits i have fitted, theyr all standard ISO fixings and in essence have the tele mute running in line of the existing wiring in order to auto mute it when a call comes in.
As you have an after market headunit in ur car...that must connect via the car ISO block rite?? but have u amped the speakers using the Pre-outs of the head unit, hence getting no sound to one end of the car for a call??
u must have the one with the little screen rite?
wel ,either case, it shouldnt matter which of the parrot kits u get, they all connect up the same way pretty much.
on the kenwood wiring loom, have u connected the Tele mute on that anywhere then?? if that comes into contact wiv a source that is constantly sending a signal down it, then that would be cause for it to remain in mute mode!
its going to be an issue with the power supply side of the parrot kit wiring as the speaker block can only do so much realy...so mite b worth tracing each and every wire on teh power side and see where each one is going with relation to the original car loom!