my 92 ls400 right hand fog light is out the bulb is good anyone had that problem,thanks for help.

 

Are you certain? Check the socket for voltage, even if the bulbs look good they may not be... Had this issue when I was a new mechanic at age 16... i checked EVERYTHING, except for the stupid brake bulbs themselves!

 

check for voltage on the wiring harness itself. how do you know the bulb is good? best way is to rotate the left side bulb to the right and see if the problem either follows or stays on the same side.

 

Thanks :But replace with brand new bulb still won't light. OH new bulb cost was $19.95 plus tax.

 

That means you have deeper problems. Check the socket itself