Ignition Solenoid

[Edward Buker]

This post covers the reason for the diode.

http://forum.bacrallies.com/v-search/p-2/

Later Ed

[Joel Weiss]

This post covers the reason for the diode.

http://forum.bacrallies.com/v-search/p-2/

Later Ed

Ed:

Your link doesn't work but this one does: http://forum.bacrallies.com/m-1372964522/s-11/highlight-solenoid+diode/#num11

Thanks

Joel

[Bob Jae]

Joel the solenoid has a coil it it to operate the contacts.  When you take away the 12V the current tries to reverse due to inductive kick.  The diode shorts or shunts it so that it does not feed back into the circuit.

Thats exactly what an ignition coil does to make a spark plug work on a larger scale, and it does not have the diode to stop it.

[Edward Buker]

Thanks Joel for fixing  the link.....sometimes cut and paste works and sometimes it has a mind of its own.

Later Ed