The OP asked about BT in his original post.
I am assuming the iPod in question does Bluetooth. If it doesn’t, then I don’t think you can use it as a source. If it does Bluetooth then you need amplification and a Bluetooth receiver. A basic integrated amp that doesn’t have a DAC will keep it simple. For Bluetooth receiver I recommend the Audioengine, probably the B1. This will connect the amp by RCA connection, and the amp needs to be wired to the Bose speakers. The Audioengine Bluetooth DAC/receiver can also be used with your phone as a source, so if the iPod doesn’t do Bluetooth, or if it dies on you in the near future, you can play the same music from your phone.
It may actually be more economical and probably sound better to purchase Audioengine speakers, or another company that offers comparable products. These speakers contain the amplification and the Bluetooth receiver. All you need to do is pair your iPod or other mobile device
As you may have surmised, Bose has a bad name amongst Audiophiles, and invoking it on a site like this invites ridicule.