I'm sure this info is here somewhere but to make it easy, the PAC product called the AUX-BOX requires 2 separate plugs. You will need both the AB-TOY and the AB-TOYT. We have installed a couple of these and they work great. Our distributor for PAC didn't know you had to use both cables and had to order both in for us.
Any problems that you've encountered with the AUX-BOX? Others have indicated problems switching back to the in-dash CD player unless restarting the car.
I quizzed my installer today about that and he said there were no problems, however I'm not sure he tried to change inputs! Installing another one late this week. I'll check it out.