Escorts can use a cheap mono ear jack (or stereo). That is the easiest way to go.
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Agreed!
If you don't want the extra cost of the bluetooth set up, you can still install the radar detector in the tank bag as I posted on page 2, just get an ear phone and plug it in to the phone jack of the detector. You don't have to buy a special mono ear jack, any double earphone will work. Snip off the extra speaker by first activating sound on the detector to hear what side is mono, and cut the other speaker side off.
extra note* I also turn the volume up all the way and put a piece of duct tape over the volume control on the radar detector to make sure it doesn't get turned down accidentally while in the bag. Nothing worse than thinking you have radar when you cant hear it.