Mfi speed transducer

[47silver]

Made a test rig for the transducer but i do not know if the trigger connection goes to ground or to +12.
My thinking is it should go to ground as that is what the points do to charge the coil, but not sure. Warren’s drawing does not show where to connect the trigger.

[mysocal911]

Originally Posted by 47silver

Made a test rig for the transducer but i do not know if the trigger connection goes to ground or to +12.
My thinking is it should go to ground as that is what the points do to charge the coil, but not sure. Warren’s drawing does not show where to connect the trigger.

The signal is a pull-to-ground then open.

[47silver]

Thank you
quite a circuit, very interesting.