I am new to using my Speed Graphic. I want to use flash bulbs, but when I plug the cord into the shutter port on the flash unit, and into the shutter release on the camera, the bulb fires as soon as I put it into the flash unit. I can not get it to fire if I plug the cord into any other port on the flash unit. What am I doing wrong?

Try cocking the shutter first.

I thought I did, and that doesn't seem to make a difference, but I will try that again (i think again?) tonight when I get home and let you know if that helps or not.

thank you for your response

Do Not waste another flash bulb.
Connect the Graflite according to this instruction manual
http://www.southbristolviews.com/pics/Graphic/manual-pdf/GrafliteManual.pdf
Use the built in synchronizer instructions. Be sure to set the circuit control to N.

http://www.cameraeccentric.com/html/info/graflex_4.html is the instructions for the camera and
http://www.cameraeccentric.com/html/info/graflex_11.html , page 12,
for the shutter operation.

Thank you so much. I printed out the manual and the directions seem very clear. Thank you again.