Escort radar detectors and other radar detectors use a regular telephone cord as the plug design. If you wish to hardwire your radar instead of using the cigarette lighter plug, you have come to the right place. The 2 wires you need are the 2 most enter wires in the RJ11 plug.
You should find an old telephone cord around your house and also look at your 99 cent dollar stores. If you want to buy it online, , Tap a fuse wire (or you can wire it direct to a fused 12 volt source), Ring Terminal