Switch Auxiliary Di - Toyota (84484-AK040) is the factory aux switch how ever they are back ordered and toyota say they are 200 and up a peice there are other places for around d 120 and below
For thos asking the question you should be able to relay box should just have to be plugged up. For those that have the relay section without fuses and aux button I should be able to tell something being of next week waiting on relay and aux switch from cali