I bought an initial set of Cactus V4's that came with the 3.5mm plug on both ends to work on my AlienBees strobes.

I recently bought two more receivers to work with the other strobes I have. These DID NOT come with the cable.

I was assuming it was just a standard stereo audio cable, but it's not. Turns out that you need a mono audio cable. I'm not sure if this helps anyone else, but it sure drove me to insanity.

Thanks,
Garrett