We have installed the iCheck Tyre Pressure Monitoring System (TPMS). We have 8 monitors, 5 for the car and 3 for the van. This includes monitoring the spare tyres.
The display unit sits on the dash with velcro to the dash mat.
We needed to install the booster as the canopy made it difficult to read the van monitors while travelling. The monitor is mounted on the rear of the roof rack, and wired to the canopy battery via an on/off switch.