[DanEC]

If you are going through the whole car you might want to buy some industrial Velcro with adhesive back. That makes it easy to stick one side on the firewall or other surface and the other piece on the back of the widget board and secure it. I did this in several areas under my dash to secure wiring and other components. A piece about 6 inch long stuck together back to back makes a handy wire wrap that can be removed and reused over and over.