what state are you in
Possible ground issue at the taillights.
check fuses and connections at the headlights and the switch in the dash, make sure your headlights are good ;-) that's a start...
You will get 3 points and also a fine which is not at a certain amount.
I believe it is around $250 from around the grapevine...
The only headlights out there that will fit the 93 Lexus Gs300 is Japan's Toyota Aristo headlights. It is a little different, but fit fine. note it's not after market.
Replace the headlight switch. Be sure to use a qualitypart.
Your wire connection to your headlights from your fuse box might be loose or broken somewhere. Try running a jumper wire from your headlights to the fuse box. If the headlight work when you try this, then your wiring has an open circuit and needs to be replaced, or fixed.
My headlights are not working after going thru a car wash. Bulbs and fuses fine.
There are individuak fuses for each headlight
in dash lights
Standard bulbs will work fine for dipped headlights. They will not shine as bright because of the darker tint. If visibility is still an issues the lights can be upgrading for better performance.