It was hardwired in and was tucked on the dashboard and pointed down toward the engine bay and it was turned on since he used it. I have a spared 8500 that I have going to sell to him, he thought it was the coolest Rd he had ever seen. I wish I had my cam. phone with me at the time to post a pic. He did say it picks up bridges very well while he going driving over them since it has this big alert lite.