Fusible link guage?

My fusible link in my '74 Duster fried yesterday, all the way up to the bulkhead harness plug. Since this left me with no excess to wire to connect into, I'm going to bypass the connector and install a fusible link in-line.

My question is this: What gauge do I need, 14 or 16 amp? I can't find it in my manual anywhere, and the wire from the battery looks like 10 gauge.

The stock dash amp gauge was pegging 40+ thsi week, so I think that's the problem...I'm going to bypass it when I re-wire the link.

Thanks,
Rob