Dash Power wire?????

You need a wiring diagram, first. The circuit is simple, but you have to follow it. The battery has two connections on the positive post. One goes to the starter (large guage), the other to the starter relay. Another wire (red wire) goes from the starter relay to the amp guage. The other side of the amp guage (black wire) is the feed to the rest of the car AND to the large post on the alternator.