HID's sometimes go out between hi and low
 

I'm in the process of installing my HID's on my 07. I've got the harness with the relay and the harness for high and low beams. During my test fit up, I noticed that sometimes the lamps go out when changing from hi to low beams or when going from low to hi. Doesn't do it every time. But has me wondering what I should be looking for. This is my second attempt at installing these. DDM's original wiring harness did not include the relay harness and back when I ordered it, last year, they offered ZERO help. So, the short of this, is I'm trying this again with their relay harness. So far this is the only issue I've noticed.

Any suggestions?

make sure the truck is running when youre testing.

Thanks. It did it with the engine running and with it off. It was only 10 out when I was installing this stuff. And today, when I put the fogs in it still did it. Until the temp was up to about 20.

I'm betting this is just a side effect of being cheap Chinese HID systems (DDM). The HID systems I built while working for Philips Lighting or Sylvania never had any issues like this.

Oh well, thanks for your suggestion