What Gauge Wire?

[Greyduk]

Hey Spare, If I used 2 gauge wire and only used the 2nd battery for emergency starting( 2nd battery as back up) with the 1994 Merc 150 do you think that would work OK?. I would use battery #1 all the time. It would be hooked up through a Perko selector switch.

[spareparts]

#4 is what most carb 2 strokes use up to 10 ft from the engine, I prefer #2 all the way, but it is sometimes hard to get thru the engine harness loom. High quality wire, good cable ends and tight connections go a long ways. You system is only as good as the weakest point, whether it be a bad connection, crappy wire, or a cheap battery switch

[bradford]

Bigger wire with fewer connections