Any time you upgrade your alternator you should strongly consider upgrading the gauge (size) of the wire that charges that battery as well as the fusible link in case of a short.
Alternator Output (Amps)
Wire Length
4 ft or less
4-7 ft
7-10 ft
10-13 ft
13-16 ft
20 or less
14
12
12
10
10
20-35
12
10
8
8
6
35-50
10
8
8
6
6
50-65
8
8
6
4
4
65-85
6
6
4
4
2
85-105
6
6
4
2
2
105-125
4
4
4
2
2
125-150
2
2
2
2
0
