Well i just install some h.i.ds and I noticed the only one comes on when i have the truck on but when i just have the auxillary on there both on. can someone help me out here

 

I'll bet you got them with a standard ballasts & not a digital ones. That being said I got that setup a long time ago & they'd flicker when I started the truck. Sometimes they'd both stay on, sometimes not. My quick fix was to flash the high beams & they'd both turn on... it just became a PITA after a while.

I'm not sure where your or if you have DRL's but if you installed the HID's in the lights that are also the DRL's you'll have issues.
HID's don't like the low power DRL's get. What do you mean by auxiliary, manually turning the lights on?

 

double check the fuses in the fuse box as well. i blew mine and could not for the life of me why one would turn on and plugged and played when the other didnt.

 

i pulled the drls. and the drls are on the high beams. it stop doing it now which is weird but it works. aux as in turn your key a little bit but dont start it

 

for me they sometimes work and sometimes only one comes on, i have to flick the headlights and that always does the trick. what brand do you have?

 

A good quality kit will not have these problems. But simple troubleshooting will find out what the problem is, HID's do not like DRL's.
one thing if you have a problem, is try reversing the polarity of the bulb in question.
second, check your grounds, it may seem good, but it could not be, also, check the factory wiring, make sure all your plugs are clean, and corrosion free.