2002 Buick Century. No Headlights. Replaced Bulbs, switch, and much more.. Why

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Q M

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no head lights? I replaced the following so far:
Fuses, Relays, Bulbs, Light Switch, Steering Column Multi Switch, All other lights work. Auto Light only turns on parking lights, no headlights. Light switch only turns on parking lights, no headlights.
I can use the headlight bright switch only to flash my brights.
Checked the harness for loose wires also.
Anybody know what's wrong???
 
yeah one of my headlights goes out, but the brights work fine...if i go mess with the wires where it connects it'll turn on until it gets jolted out of place again...maybe a loose connection like mine?
 
if you have and know how to use a multimeter then you should start checking all the switches and relays for voltage output to the lights.and if you don't have or don't know how to check an electrical system then by all means please take it to a qualified electrical repair shop !
 
might have a bad wire. need to test and check where the wiring harnesses come in contact with the fender and such as it may have rubbed through and is grounding out.
 
Since the brights come on come on when you pull back on the dimmer, I would say that is the bad switch. There are a ton of parts that can affect how your lights work, as you found out. I was going to suggest a bad ground on the headlights, but they would not come on at all if that was the case.
I know you said you replaced the multiswitch, but the dimmer may be a separate switch. Ask the parts counter guy to show you all the parts in the headlight circuit to see if you missed anything.
 
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