Need Help, High beams dont work on my 93' 240

[Z3gundam]

I dont have any idea what could cause this. I use regular h4 blubs, with hi/lo (I know some bulbs only have one or the other). The low beam works fine, but when I flick the stick for the hi-beams, it all goes out. The dash lights are fine, just the headlights go out, hi and lo. The little blue light in cluster that lets my know the hi-beams are on dont even come on. But when I flick that stick again to bring it back to lo-beam, the headlights come back on. It only works on lo-beam. Can anyone tell me what it might be? Thanks

[Fla240sx]

arggggg... let me stab at this

check the power before the lightsthere is a harness plug before the lights with 3 wires on driver side lightpax side has different color wires and I can't really recall what colors... I just did this test 3 days ago

the green wire is reg powerthe red? is brights powerpink/purple is ground

take a test light, ground to pink wire, turn on lights, probe green wire should light up, probe next wire, turn on brights, should light up... if it doesn't you have an electrical problem on that circuit... if it does light up correctly you have bulb issues....... highly unlikely on both sides tho