<p>Hi, greetings from Brazil;)<br> I buy two RF-603 N (nikon) (for mistake) to work with my Canon Mark III 1Ds and Yongnuo 560 III and 568 EX (canon hotshoe)<br> The 560III has one pin only to fire (canon and nikon), but has too wireless connection.<br> I cant make this combo work!<br />This is what I check:<br /><br /><em>- If I put the 560III (in manual mode) or 568EX, on top of my camera, they fire all right</em><br> <em>- If I put one RF 603 in both flashes and covering or not the surround pins (no the central one), I could make "fire" this flashes just "shorting" the two diagonal pins of the base of 603 (standalone not put on top of my cam), so the wireless connection is working.</em><br> <em><br /></em><strong>BUT:</strong><br> - If I try to put one RF 603N on top of my camera (covering the surround pins, left the central one open) and try to fire the 560III or the 568EX (both in manual mode) with the another 603 radio attached on his hotshoe bases (with or without covering the surround pins) they dont fire, no matter what!<strong><br /></strong><br> - I cant make work either the RF 603N and the 560III (in RX wirelles mode) with my canon camera (even covering the pins).<br> <br />I DONT USE ANY CABLE (SYNC OR NOT) to connect the radio to my camera.<br> Any help will be greatly appreciated!<br> Excuse me for any english faults, please.<br> Best regards,</p> <p>Adriano</p> <p><em> </em></p>