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I have a 2000 Jeep Grand Cheroke Laredo, I changed a tail light and now I have no break lights even though the regular lights work. What is causing that, and can I fix it myself?
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Have you checked the brake light fuse to see if there is power at the fuse and out of the fuse, also check the brake light switch for power in and out when the pedal is pressed, do that and get back to me.?
Check the fuses as well as the wiring near the tail light.
If all seems good, get a cheap multimeter and check the voltage in the wires that go to the tail light (red probe on one wire and black probe on the other). If you get a reading about 12 Volts (or -12 depending on which wires the black and red are on) the problem is the tail light or bulb itself.
The 1999-2004 Grand Cherokees had some lighting issues with the tail lights. First check to see if you have power back there with a test light, if you do try changing the bulbs. If that doesn't work, Inspect the bulb sockets to see if they are burned. The issue that I saw the most was the tail light housing being warpped and breaking contact with the bulb socket. The only fix to that is to replace the tail light assemblies. Hope this helps.
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