An insulative feedthrough that is configured to be attachable to an active implantable medical device, AIMD, the insulative feedthrough comprising: a) an insulative feedthrough body comprising a material which is both electrically insulative and biocompatible, the insulative feedthrough body having an insulative feedthrough body first side spaced from an insulative feedthrough body second side; b) a passageway extending through the insulative feedthrough body to the insulative feedthrough body first side and second side, wherein an internal metallization resides on the insulative body in the passageway; c) a composite conductor disposed in the passageway, the composite conductor comprising: i) a biocompatible first metallic wire having a first metallic wire first end disposed in the passageway and a first metallic wire second end; ii) a second metallic wire which is not of the same material as the first metallic wire, the second metallic wire having a second metallic wire first end and a second metallic wire second end, wherein the second metallic wire first end is disposed at or adjacent to the first metallic wire first end in the passageway extending through the insulative feedthrough body; and iii) a first gold braze contacting and hermetically sealing the first metallic wire first end to the second metallic wire first end and to the internal metallization residing in the passageway extending through the insulative feedthrough body. a) an insulative feedthrough body comprising a material which is both electrically insulative and biocompatible, the insulative feedthrough body having an insulative feedthrough body first side spaced from an insulative feedthrough body second side; b) a passageway extending through the insulative feedthrough body to the insulative feedthrough body first side and second side, wherein an internal metallization resides on the insulative body in the passageway; c) a composite conductor disposed in the passageway, the composite conductor comprising: i) a biocompatible first metallic wire having a first metallic wire first end disposed in the passageway and a first metallic wire second end; ii) a second metallic wire which is not of the same material as the first metallic wire, the second metallic wire having a second metallic wire first end and a second metallic wire second end, wherein the second metallic wire first end is disposed at or adjacent to the first metallic wire first end in the passageway extending through the insulative feedthrough body; and iii) a first gold braze contacting and hermetically sealing the first metallic wire first end to the second metallic wire first end and to the internal metallization residing in the passageway extending through the insulative feedthrough body. i) a biocompatible first metallic wire having a first metallic wire first end disposed in the passageway and a first metallic wire second end; ii) a second metallic wire which is not of the same material as the first metallic wire, the second metallic wire having a second metallic wire first end and a second metallic wire second end, wherein the second metallic wire first end is disposed at or adjacent to the first metallic wire first end in the passageway extending through the insulative feedthrough body; and iii) a first gold braze contacting and hermetically sealing the first metallic wire first end to the second metallic wire first end and to the internal metallization residing in the passageway extending through the insulative feedthrough body.