New Users: Send info@vems.com an email with your account name. I've turned off auto-approve to reduce the 100 new spam accounts a day. Thanks, -Jason
It is vr sensor. Third wire is shild. Red wire is -, black wire is +.
take measurements of the resistances across the pins. Pin3 will be the sheild so it will give no reading across the other pins.
It's matter. If you connect opposite you couldn't read rpm.1pin +2pin -3pin shild