12v relay playground schematic

http://www.amazon.ca/gp/product/B00164SFFQ/ref=oh_details_o01_s00_i01?ie=UTF8&psc=1

That's the strike. Didn't come with a schematic or diagram.

I went thru all I could find here http://www.rutherfordcontrols.com/en/products/electric-strikes/4-series/#specifications-tab and didn't any special about wiring. So: treat it like any other coil driven device; +12 to one lead, other lead to transistor to Gnd. Diode across the leads to protect the transistor, cathode to +12.

Thank you very much sir. Your help and patience are greatly appreciated. How do I rep you or give you karma on here?

You can click the + next to Karma for me. Glad to help.