What causes separate ignitions on HIDs? When I turn them on, one goes first then the other.

 

your probably not running a relay are you ? running through stock headlight wiring harness's ?

the start up is more than the stock wires can handle.. make a new wiring harness get the parts from radio shack or the such. http://www.hidplanet.com has a nice forum where you can do some reading on harness's..

 

on the relay