70 coronet

the ammeter wires burned up, i bought it like that. he has the red and black under dash straight back to relay, what is missing? the red gets a fuseable link from relay into gauge? correct? the black goes to a conector? than to the alt., fuse box, ignition and lights? is that correct? this previous owner has the black band red back out to the relay. i have no power to alt not sure about fuse block yet, car does have power at ignition the car starts with the key, and i have head lights not sure about interior dome. any help is cool. any pics is sweet thanks folks,

See if this link helps.

it did. thank you. seems i have the problem now they had then. too much power at the alt. the double field wire arcs a spark when you disconnect it. no charge from alt. working on it tonight