I would like to use the Auxiliary input in my 08 Ford F250. Where on the back of the Z2 do I connect this to make it work?

I had this installed when I bought the truck, and I cannot find the installation manual to find this info.

The AV2 input.

The AV2 input.

Thanks for the reply. Do you know where on the back of the Z2 this would connect to? What type of wire/connector is used?

On the back of the unit. It should be labeled and is an RCA connection.