Welcome to the group

there is a
manual for the 350 in the manual section
usual configurations are like this
wires big red & white wire are M1 & M2
that should leave 3 other wires from same cable ( orange,green & brown)
brown = ground , orange = +5 & green = top hat symbol
Small group of wires = feedhorn ( usually Small black , small white & small red wires)
black is ground , white is pulse , red = +5 volts
before connecting or moving any wires look at the manual and see if your motor type is lysted for a more accurate detailed listing. page 41