Stock lights? If not, they might be drawing too much current for the relay.
I would start with replacing the head light switch
Xenon lights bring many advantages to the automobile headlights. It is more efficient compared to the standard halogen headlight because of the color temperature and the amount of light they generate.
Each type of vehicle has a unique design to its headlight assembly. Some have the headlight and emergencey lights in one housing others have them seperated.
Any of the standard $20 headlight restoration kits do a good job
behind the headlight
unless your dimmer is turned down..... blown fuse or bad headlight switch. that's about it..
change the headlight switch it controls the running lights....$15 at autozone
Yes.
Tap at the plug at headlight Hi-Beam
bad headlight switch
A 1990 300zx headlight is recessed into the bumper. To remove it, first loosen the headlight bracket bolts. Unplug the lights and push the housing outward. Be careful not to ruin the weather stripping for the lights.
It's the head lights only.