Ignition Electrical Switch 70-74. 111-905-865F 111905865F £18.00 Quantity: at £18.00 each Add To Basket Electrical starter switch that sits behind the lock barrel. Fits all Bay window 8/70-4/74. If yours has the plastic plug with soldered on wires, then this is the one. Earlier is made of metal, and later has spade terminals istead of soldered on wires.