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96 tahoe headlights not working

Car: Chevrolet, Tahoe, 1996     -    Back to Fix-It

Q.96 tahoe headlights not working, fuses good, switch good--has drl's.

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I already checked/done: checked fuses-good,switch is good,checked park brake switch also,all 4 bulbs are good replaced drl bulbs. still don't work

More Info required
Does your high beam lights work?
How did you test the headlight switch?
Do you have a test light?

Addition high beams do not work at all, i had the headlight switch replaced bout a mouth ago also i use the park brake to turn off the drl's at times and now have nothing but park lights thru the main switch and have tryed dimmer switch but no response at all just park lights.
And i have a multi-meter i used to check with thanks mike.

Answer
1) Turn you main light switch On and check if you get +12V output on the Yellow wire at the switch connector.
2) If you get +12 V on the Yellow wire, than locate a big C266 connector and the bottom left of the steering column and find there 3 wires :
terminal E13 - Yellow, E12-Tan, E11- Light green ( see the picture below).
3) Check if you get +12V on the Yellow wire at the C266 connector with the headlamps ON. If you get power, go to the next step
4) Set your dimmer switch to LOW beams and check for +12V on the Tan wire.
5) Set your dimmer switch to HIGH beams and check for +12V on the Light Green wire.

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