I recently installed a Sirius Onyx Plus XM receiver on my Trike. I chose this receiver so I can use it with my trike, van, and motorhome. This way I only had to purchase a single subscription from Sirius XM. Harley Davidson does sell the Sirius XM module which costs $400 but you can only use it on the trike.

Below is a link to my blog which explains the install.

https://davestrike.blogspot.com/