Which brake line feeds to the drivers side rear on a 1993 ford thunderbird lx?

On a 1993 Ford Thunderbird LX, the brake line feeding the driver's side rear wheel is typically a rear-most line branching off the main distribution block. It's not directly labeled as "driver's side rear," so you need to trace the lines.

The lines usually run along the frame rail and are often protected by some sort of heat shielding or loom. You'll need to visually trace the lines from the master cylinder to the rear axle to definitively identify it. There's no single easy answer without a visual inspection.

Caution: Working on brake lines requires careful attention to detail and proper safety measures. Brake fluid is corrosive, and a leak can lead to serious braking issues. If you're not comfortable with this task, it's best to take your vehicle to a qualified mechanic.