Install aux input on factory 6 disk player

[Rontrac01]

Can anyone tell me if this stereo will allow an install of an aux input? Where is a good place to buy? Which one do I buy?

The truck is a very early Job 1. It was first registered in February of 2000, so I am not sure if it is a different unit than what was installed in vehicles produced later on in the year and for the next few years.

 

[OSUChE]

You most likely will need an interface adapter such as a P.I.E. model shown here :
http://www.sonicelectronix.com/item_38443_P.I.E.-FRD04-AUX.html
I installed a three input on my 97 LTD inside the tissue box holder at the front of the console. It works great for me.