What gauge wire to coil ?

[old bird]

What gauge wire from ignition switch to coil, approx. 15' - 20'.
Thanks

 

[old bird]

On an old Mercruiser GM 454 Mark II, Mallory points ignition.

 

[Bondo]

Ayuh,..... I'd think 14ga oughta do it just fine,.... 12ga if yer worried 'bout it,....

 

[old bird]

Thank you sir !