I installed a cobra 19 a few days ago. Put the radio in the center console(between the two seats) so I could lock it up on no top/no door days. Wired a "cigarette lighter plug" for power inside the console. Drilled a hole through the consoles bottom ran the coax cable through that, under the carpet to the passenger's side tube to run back to the tail gate with the other wiring. Fished that line through tail gate. That wasn't so bad. Found a 7X1 strip of steel, drilled 3 1/2 inch holes, bent the end to about 90 degrees to hold the antenna mount. Painted to black and bolted it on the existing tire mount bolts. Also not so bad.
Now after this I was getting ZERO sound on the radio's speaker. Nothing not even static. After fiddling with it for days I realized the antenna wasn't grounded properly. So I ran a ground from the top bolt behind the tire carrier (remember to scrap off paint) to the antenna mount (the bottom of the mount).
I got intermittent sound (static). So I grounded the tailgate by running some wire from the tailgate to the tube.
Good sound. Still need to calibrate with SWR.
Long story short:
Antenna mount (plug with coax connection, nylon washer, washer(s) antenna connections)
Bracket/mount for antenna mount
14 or 10 gauge wire for grounds
about 20 ft of coax cable
Don't forget your ground. Good luck.