Help with SF Line1 relay trigger


I can't figure this out, I have my Line 1 going to my Monster 5100 relay in using a mono mini plug cord. The Line 1 isn't triggering the Monster to turn on. I have checked the voltage coming from the Line 1's relay out and believe it is pumping juice (I have a very cheap multimeter and get a wide variety of results) and have no reason to believe the Monster isn't functioning properly (its brand new). Any suggestions? Would a stereo mini plug make a difference?
mdomnick
It probably is supposed to use a mono plug. Is the cord homemade? I'm guessing maybe the polarity is not correct.Usually the segment of connector closest to the plug is ground (-) and the tip is positive (+). Good luck
Write to sonic frontiers but I suspect that the trigger isn't set up for the Monster. My Line 1 won't trigger my Anthem MCA-20 because the Line 1 is using an older trigger design than the new one on the amp - these two products are made by the same company. That was the answer I got back from SFI. Good thing my amp has auto-trigger where if it senses a signal it will turn on. Been very reliable so far.
Thanks for the replies:

Here is what I got back from SF/Anthem;
"Unfortunately the Line 1 uses an outdated triggering scheme that needs an external power supply - all the connection does is complete a circuit when the Line 1 is turned on. Let me know if you want to build one - a 12V supply and a relay are needed."

I have replied to get instructions on how to build this. I'll post once I get them.

m-