HI I am geting about 4v AC. current thru the two green magneto wires. Q1- Is this about right? No DC. current from red wire... Q2- Can I fit any motorbike rectifier or do I need a Yam 701 one.? (tried old kawa one but no idea if it is good...). Q3- Anyone got a 701 one.. No's- 6m6-AO Sh589-12 4.7 Ta.