I like to use 18ga for most and 14 for the headlight.
I like to use the most flexible stranded wire I can find, usually found at an electronic store or appliance supply.
Capacity Chart
This chart is a simple "max capacity" chart for a short wire run. Motorcycles are a short run
Gauge 12V
22 5A
20 8A
18 10A
16 20A
14 40A
12 60A
http://www.sengpielaudio.com/calculator-ohm.htm is one.
Hope this helps
Riksoto
I like to use the most flexible stranded wire I can find, usually found at an electronic store or appliance supply.
Capacity Chart
This chart is a simple "max capacity" chart for a short wire run. Motorcycles are a short run
Gauge 12V
22 5A
20 8A
18 10A
16 20A
14 40A
12 60A
http://www.sengpielaudio.com/calculator-ohm.htm is one.
Hope this helps
Riksoto