2002 focus. I turn on the headlights the high beam indicator is on. Only the driver side headlight turns. I turn on my brights and driver side brights work but passenger side still doesn't work.

The usual cause is a bad ground.
Check the ground with a test lamp.

bad connection or bad earth check all connection or bulb

I would check for the groundwire continuity

Driver side - dim low beams and no hi beam - Subaru Outback ...

www.subaruoutback.org > ... > General > Electrical & Electronics

Oct 11, 2014 - Hi everyone, My drivers side headlights are dim on low, (car has separate bulbs ... When the headlight switch is turned ON, but for low beams, ...

Driver-side Low beam Not Working (electrical issue not bulb ...

www.hummer4x4offroad.com/.../showthread.php?...Driver-side-Low-be...

Mar 12, 2015 - 10 posts - ‎4 authors
The high beam continues to work on both sides...I pulled the Driverside headlamp fuse and then both left and right beams lit up but very dim.

High beams ok, but not low beam - one side only - TDIClub Forums

forums.tdiclub.com > ... > VW MKIV-A4 TDIs (VE and PD)

Jan 23, 2014 - My driver's side lights are working fine - high and low beams. ... But it definitely looks like the big lamp on the driver's side gets brighter when ..... Drivers side headlight is very dim on low beam and goes out when on high beam ...

Dim driver's side headlight (low & high beam) - GrandAmGT.com Forum

www.grandamgt.com > ... > Technical Q&A

Dec 11, 2002 - 6 posts - ‎4 authors

Could be a defective headlight relay, Located in the fuse block in engine compartment,

I would start at the headlight switch check your ground wires and connections at the light themselves also check the bright dim switch

Did you change the turn signal switch?

if you have power to both headlight plugs for each low and high beam filaments and the ground is good as you say the high beams function normally then you either have bad low beam bulb filaments,poor or dirty connection or you have a daytime running headlight relay on the car and that is the problem with the low beam lights.yes the high beams will work but not low beams if it is the relay.

p, li { white-space: pre-wrap; }

Turn the engine off, open the hood, and disconnect the negative battery cable (--) with your pliers.

Locate the power distribution box against the firewall on the driver's side of the engine compartment. Flip up the latch and remove the plastic cover.

Determine which headlight fuse you want to replace. The 2001 Ford Focus uses four headlight fuses--one for each headlight. Fuse number 16 is for the passenger side low beam; fuse number 17 is for the driver's side low beam. Fuse number 26 is for the passenger side high beam; fuse number 27 is for the driver's side high beam.

Grasp the fuse with your fingers and pull it straight out of its mount. Insert the new fuse in its place. Replace the plastic cover and reconnect the negative battery cable.

So, when u turn on the high-beams, the indicator light goes on, but u still have low beam headlights only? Check the headlight (either one), and see if by chance both high beams burned out at approx. the same time. U don't specify what year, I'm not sure if u have a replacement bulb, or a sealed beam headlight to replace. If the high beams are both ok, then it must be the headlight high beam switch. Let me know what u find.

The main/high beam relay/switch must be stuck on high presuming the high beam stalk selector does not operate. Probably needs replacement.