10 is a bit light for the starter application, its rated for up to 85a for under 4ft runs, if i were doing a battery cable on my bike, i would go 8ga minimum, probably 6, given i have easy access to all sizes of wire working at a small engine shop ( i have several feet of 4-8ga in my tool box...LOL)
8 ga would bump you up to 150a handling... that may well be the issue right there, along with double checking your grounds are good and clean, and TIGHT on all cables....
|