I just bought a ScanGauge II and I have been through two sets of Velcro. It is extremely hot here and I think the heat is melting the glue. I bought a stronger adhesive Velcro from Walmart that I tried the second time and it only lasted a day. I mount it behind the steering wheel. The only thing I can find on this board in regards to mounting is one thread and pic for a Gen III but it is mounted underneath the air vent which is not something I would want to do since it is hard to view and a Prius C thread/pic behind steering wheel that may work on the Gen III. Anyone with a Gen III and ScanGauge please provide suggestions and pics if any. *Edit/Added - the adhesive worked great on the actual ScanGauge and held really good. It was hard to peel off. The steering column is where it is not sticking. Before I applied the velcro stick I used alcohol to clean surface and SGII before applying. I was hooking the OBDII Plug from the side, should I plug in back? Thanks.