The iRV RV Stereo w/ DVD Player - Single DIN - App Control, Bluetooth, HDMI, USB # 292-101809 can not be connected to a Bluetooth speaker. This stereo was designed to be wired into up to 6 speakers.
The Bluetooth capabilities are referring to you to connecting your smartphone to the stereo and playing the audio from the connected speakers.
I have attached a wiring diagram for you to check out as well. view full answer...