I just want to help anyone interested in hardwiring their RD on their WK since I was having troubles finding a good guide.
You first want to have a RD. (obviously)
You then want to make sure you purchase
Direct Smart Cord
You then want to purchase a "add a circuit mini fuse"
Add A Circuit Mini Fuse
And then you want to grab (needle nose pliers, crimping tool, wire stripper tool, flash light (phone), Electrical tape if needed.)
I followed this guy exactly.
Step 1: Locate the fuse box (underneath the steering wheel)
Step 2: I took off that hinged door under the steering wheel by pulling up, and there is another removable hinged piece of plastic below the fuse box (above the foot rest next to the pedals) I removed those for extra room.
Step 3: Locate which fuse you want to tap into. I used the driver side cigarette lighter fuse spot, (there are three yellow fuses and it is the bottom one)
Thanks to @08Hemi for this pic and all of the help he gave me.
Step 4: Find the positive line of the direct cord (has a red line on it) and clip the end of it as the video states, and then put it into the add a circuit and crimp the end.
Step 5: Remove the 20amp fuse with pliers or your fingers gently and insert it in the lower slot on the add a circuit and then add the fuse that comes in the packaging into the front slot (I used the 3amp fuse).
Step 6: Plug the fuse back in the slot that the fuse was removed. Congrats you just hardwired your radar detector!