hid off road light problems

[the big blue bus]

im having weird issues. i put some ddm 4500k hids in driving lights on grill guard. now i thought it was ballest but they still like to randomly pick wich one comes on and i have to flip my switch a frew times for them to come on. any ideas? never had any problems with my hedlight hids

 

[TTZ06]

:ears:

 

[ajaxnxs]

 

[SunlitComet]

lack luster wiring?

 

[the big blue bus]

moved the ground and that solved one of them. now it comes on everytime with switch but still not the drivers. someone said to flip the polarity of ballest. could that be it?

 

[Ceejkay]

has it ever worked? what are you using for power supply

 

[the big blue bus]

yes they both worked the first time when i had em in the bumper then one would flicker and since i moved em to grill guard that ones worked but now i cant get it to work

 

[Ceejkay]

ok harness isnt flipped if they worked before unless you un plugged them, also if you have your ballasts just floating in the breeze( not secured) you will blow the ballasts. also take a meter to make sure you have a FULL 12v going to them, ballasts dont like low power( also will blow them)

 

[the big blue bus]

they aremounted by the rad and dont move. ill check that tonighit last i checked they had good power going to them around 13

 

[SunlitComet]

the ddm are supposed to get the plug turned 180 normally. they were originally set up as a positive ground system. not negative ground like our vehicles.