Option 1: Spring-Loaded Mount
This part is easy. First, order this mounting arm – just $25 shipped!
https://www.amazon.com/Arkon-Tablet-Holder-Samsung-Galaxy/dp/B00585CLSQ/
Some contractors report the best place to mount is left of the driver on the “sill” of the window. Get yourself a drill-driver and mount in seconds…
Attach iPad (we recommend a good case), connect power, and you’re done!
Option 2: Lockable Mount
This option gives you the assurance that an opportunist thief will be thwarted. This one is a bit more expensive but will give you more peace-of-mind:
https://www.amazon.com/dp/B01CEFEMLQ/ref=cm_sw_r_cp_apip_U94xSkHPUsONt
Notice the lock on the top of the mount:
Here’s what it looks like mounted in the center of the vehicle:
It mounts to the dash like this:
In any case, we absolutely recommend providing a full-time power connection to the iPad, as is shown here.