If something goes wrong during the installation, they will not support their product and will blame the installation, not the product itself.
I had a qualified car electrician install a lockpick system that shorted and burned out my NAV screen. Coastaletech refuses to take ownership. They refuse to believe that their product is defective and therefor it must be the installation.
Do not do business with this company. They will not support their product. If anything goes wrong with the installation of their product, they will tell you to bad, your fault. If you return the product, you will be charged a 15% restocking fee.
Their product ruined my $ 2600 NAV system and they refuse to take ownership.