How to mount a Wilson dual band cell phone exterior antenna onto a
1999 Chinook Concourse E 350 Super Duty motor home. Antenna location
and instructions, cable layout, and phone placement. Phone Motorola
V400.

Alternative Wireless.com at
http://www.alternativewireless.com/cellular-antennas/wilson-antennas/wilson-dual-band-antenna-NMO-mount.html
sells these whip antennas and accessories.

It seems there are several types of Wilson mounts, so first determine
if your rod optimally should attach to glass, a metal bumper or trunk,
or the roof. You probably don't want the roof mount for a motor-home.
See if you have the mounting hardware and enough cable and an adaptor
to connect it to the phone and perhaps an amplifier. After hookup hide
the cord in the car trim. Many people place the phone system in rack
mounts next to the driver if there is no space in the center console.