For those of you looking to maintain OEM looks in your Cruiser, I have installed Bluetooth receivers and amplifiers in classic cars and trucks for many years. Everything is hidden and not associated/connected with the original head unit in the dash. You simply use Spotify or Pandora playlists, MP3's or any audio content you can find on your phone to drive the system. This preserves the original look of the dash but gives you a rockin stereo. These units support A2DP (stereo music audio) There are a large number of low power combination Bluetooth/amp combos on Amazon. Some good, some with quite a bit of distortion. Higher power systems require a separate Bluetooth receiver with a line level output to drive the amp(s). Make sure the Bluetooth receiver has sufficient output to drive the amp to full volume. Some are a bit anemic in that respect. I have only seen a few Bluetooth receivers that have reasonable noise cancellation to have a microphone that will allow effective cellphone voice call use. And most of them have a head unit that you would have to hide in a center console or glovebox. For this feature it must support HFP.
One manufacturer (ecoxgear) has taken the music connectivity to the next level. Their Bluetooth receiver can re-transmit to other receivers with their tech and all systems play the same content. Multiple vehicles (or boats) within range (about 30 feet), parked together, can all be playing the same music. They also make amplified soundbars and portable speakers.
One manufacturer (ecoxgear) has taken the music connectivity to the next level. Their Bluetooth receiver can re-transmit to other receivers with their tech and all systems play the same content. Multiple vehicles (or boats) within range (about 30 feet), parked together, can all be playing the same music. They also make amplified soundbars and portable speakers.