I recently purchased and installed a Garmin Zumo XT on my 21 Spyder RTL. I have bluetoothed the Garmin to the spyder and I also bluetoothed my phone to to the spyder. I cannot figure out how to get the voice prompts from the Garmin to play through the Spyder speakers. The phone plays my Sirius XM radio through the speakers, but I get nothing from the Garmin. The Garmin voice only comes out of the tiny speaker on the back of the GPS and my 75 year old ears can't hear it. The Garmin manual only talks about pairing the GPS with helmet speakers or earbuds. What am I missing?? TIA.