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Taillights not working properly

Tiny
LOW_LOW96
  • MEMBER
  • 2008 JEEP GRAND CHEROKEE
  • 4 CYL
  • AUTOMATIC
  • 100,000 MILES
Okay, so, when my lights are off my brake lights taillights and turn singles work but when I go and turn my lights on at night, I don't have any power in the back. I don’t know where to start. Could anyone help me?
Monday, June 13th, 2022 AT 1:13 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,244 POSTS
Hi,

I need you to check something. Using a voltmeter or multimeter, with the headlamp off, confirm there is 12v. Then check it with the headlamps on and see if it still shows voltage.

I attached the wiring schematic for the exterior lights (minus the headlamps) below for your reference.

Do this and let me know what you find.

Joe

See pics below.
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Monday, June 13th, 2022 AT 8:20 PM

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