Posted by Janicholson on September 12, 2008 at 09:34:02 from (199.17.6.128):
In Reply to: magneto switch posted by JIkemire on September 12, 2008 at 08:07:44:
Very early Ms and Hs had a grounding switch made to be attached to the mag with screws, and be operated by a choke cable type mechanism. Many of these were replaced with a push pull mushroom switch in the electrical box. These switches are a look alike to the more common point and coil switch, but are way different inside. The Mag switch is a single terminal switch with the switch body (and its connection to the electrical box metal) being the ground. It connects the wire from the mag to ground when pushed in, and opens the connection when out, allowing mag operation. A point/coil switch has two terminals and one is connected to bat volts on the load side of the amp meter, and the other to the coil. They are not the same inside at all, and if used with one side grounded, will be on when in and off when out. Not too important for an informed operator, as leaving it on when stopped does nothing. But it may cause starting frustration if pulled out to start. A single pole toggle switch with the on off plate reversed, and one terminal grounded will work just aas well. JimN
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