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Help, After buying an 850 in 5 boxes and becoming NOC shop, RGM and Andover norton's best mate i'm at the wiring stage, the old alternator came without wires so that's been replaced with a 3 phase lucas alternator, a podronic 3 phase unit and a boyer mark 3 unit i had on the shelf. It seems a daft questionbut do I use 12v coils or 6v coils if so do they go through the ballast resisitor. I've looked at various sites and if the boyer is fitted they keep the 6v coils, have i answered my own question or would 12v coils be better.
Another daft question is the ignition switch, where is it secured to on the frame.
Tony, I've basically just…
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Tony,
I've basically just done the same myself. It depends on the ignition type that you are using rather than the alternator output, as I understand it. I retained 6v coils, and as I have electronic ignition I do not use a ballast resistor across the coils.
I was advised that 12v coilswouldbe a mistake with electronic ignition, and that the ballast resistor can go.
BTW - I don't know what type of 850 yours is (1,2 or 3), but if it has the warning light control unit and you have fitted a 3 phase stator (3 x 4v windings), it is likely that your ignition light will only go out over 2.5 thousand rev's, as the warning light unit can only accommodate 2 coils taps for it to sense -theoretically8 volts. Unless of course I'm being a complete chump! However mine did do this as I expected so I'm getting shut of it and putting a rather clever LED device across the battery! Still shows charging (red,yellow,green) etc., but doesn't require a splice from the stator feeds.
It is also worth taking the opportunity to replace the 2M capacitor.
I used one of these:
Specifications
Capacitance Value 4700Î?F Construction Can Equivalent Series Resistance 0.036Î? Leakage Current 6000Î?A Maximum Operating Temperature 85?C Minimum Operating Temperature -40?C Mounting Screw Terminal Product Diameter 36mm Product Height 52mm Ripple Current 6700mA Tolerance 20% Type Electrolytic Voltage 63VdcWhich may be found at:
http://uk.rs-online.com/web/search/searchBrowseAction.html?method=searchProducts&searchTerm=3819087P&x=31&y=14
Better spec than the original, a bit cheaper and screw in terminals are far more preferable in my opinion.
Hope this helps
Jack