Hi, just purchased an alpine CDA-9812RB its a 60x4 watt headunit!! Have been told it has a built in amp basically!! Fitstly had to rig it to the battery which i had to use a glass fuse!! It already packs a 20watt fuse!! Just been reading on how to wire it and i have to wire it to a free terminal in my fuse box! How do i do this as the connector on the wire is just a femal bullet connector!! My fuse box is inside the car just under the steering wheel!! Any help much appreciated