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Overview
This is a narrow, hands-on repair clip focused solely on swapping the ignition key switch on a Massey Ferguson 35, with the battery already disconnected beforehand. It compares the old and new switch, notes a fit mismatch (the new part lacks a flat spot and a retaining feature the old one had), and works through wiring the terminals over. Useful for owners doing this exact repair, not a general overview or buying guide.
Posted by the FixinThatUp channel, appears to be an owner doing their own DIY repair work rather than a dealer or professional mechanic.