OK its back into the dash again. This is not that bad. You have 3 wires to hook up and the antenna to run. One wire goes to something on the fuse block that comes on when the ignition switch is turned on. One goes to a ground. The third goes to a constant 12V sourse---hooked mine to that bump on the firewall that says it is a positive terminal. The instructions say if the unit causes intrefeerence to run a wire back to the battery---problem is it does not say anything about a fuse. I am going to call and see what size fuse should be in there.