Taillights not working properly

2008 JEEP GRAND CHEROKEE
100,000 MILES • 4 CYL • AUTOMATIC
Avatar
LOW_LOW96
  • MEMBER
  • 1 POST
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?
Jun 13, 2022 at 6:13 AM
Advertisement
Avatar
JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 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.
Images (Click to enlarge)
Attached Media
Attached Media
Jun 13, 2022 at 1:20 PM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle