Report 2 options on wireing harness in 1963-64 Avanti Posted September 7, 2006 Hi! I am back. One of the obvious repairs is to the wiring harness. As expected there are frayed areas where visible, and likely elsewhere. Plan is to completely change out. There are two options: 1. Get a reproduction harness/fuse box for ~450.00, exact match presumably using modern materials. Uses AGC barrel fuses. Replace breaker box separately 2. Get a 21 circuit modern "fit anything" harness/fuse box for ~150. with colored/labeled wires. Uses micro-spade fuses. Through away the breaker box. Other than the "concours" issue, is there any sound reason to go with the reproduction harness? thanks!