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3 way point wiring both frog switching and if chosen solenoid point motor wiring is all shown on my web site about 1/3 way down the page. Both types of 3 way points are shown - Those with three factory fitted frog wires and those with two.
Four IRJs are needed as a minimum and usually they are fitted onto the ends of the rails that lead away from the frogs (Vee rails). The outer pair of rails technically do not need any IRJs, as they never change polarity and are always at the same polarity as the rails that feed into the point from the tip end. However there is no reason why they can't have IRJs if desired.
3 way point wiring
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