Novatron 1000VR does not fire with V5
I picked up an old Novatron 1000VR set and modified the sync cable to connect into the V5's (basically I bought a household to miniphone adaptor). When I attach one to my Novatron box and one to my camera, the test button works great to fire the strobes. When I use my camera shutter, it does not fire them. If I remove the one receiver from the novatron and attach a regular speed light, it works just fine. What could be the issue.
The camera is an Olympus OMD EM1.