How do I use auto-increment within a trigger?

I have a receiver with one 12v trigger for external machines. I have three powered speakers with single trigger inputs. I am looking for a device that will let me use the lone 12v trigger on my receiver to power up/down my three speakers.

I have bought a new flash radio trigger system, but I am struggling to get it to trigger my flash head even though I've tried all the transmit/receive combinations! Am I right in thinking that I don't need a sync lead between the camera and the unit?

i have a nikon d80 and a nikon sb800. i want to know if i could use a wireless speedlight trigger (like so: http://www.amazon.com/gp/product/B004LCGQOW) to tirgger my flash off camera.

I am approaching a shoot soon and i need some speedlites. Problem is I only have one radio trigger units. If i connect that to one flash will i be able to use pocket wizards as well with the other speedlites i have set up?

I really never heard of this, but I just read on another forum where some use a trigger -specific lube? You???

i am allergic to almond and nuts and my mom bought me a new shampoo with almonds in it will that trigger my allergies?

Yeah... I just got my new Vivitar 283 in the mail yesterday, unfourtianatrly, the sync voltage was a bit higher than expected, at 263v... My camera can handle 250, so I bought it assuming whatever voltage it was would be safe... Anyways... I am now in...

my friend gave me his pimped out tippmann 98 custom for my bitrhday but i dont know how to work the e-trigger, how do i change the settings?