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Posted on Jan 30, 2018
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Why does my brake light stay on when my running lights are on?

While driving at night with my headlights on my drivers side brake light is constantly on. I looked under the rear-end and saw that the previous owner made a mess of all the wires that connect to my drivers side tail light assembly. where can I find a detailed wiring diagram for the rear lights?

1 Answer

Lawrence Oravetz

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  • Jeep Master 10,558 Answers
  • Posted on Jan 30, 2018
Lawrence Oravetz
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Auto parts stores have manuals made explicitly for your make and model. It will have the diagram with the color code for all the wires you need.

5 Related Answers

Anonymous

  • 475 Answers
  • Posted on Oct 13, 2008

SOURCE: 1989 Jeep Cherokee - Electrical Problem - horn, brake lights, blinkers, radio/cd...

There could be a fusible link under the hood off the starter relay that is burnt out.

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Anonymous

  • 1 Answer
  • Posted on Jan 04, 2009

SOURCE: 1989 Jeep Cherokee - Electrical Problem - horn, brake lights, blinkers, radio/cd...

I think I have found the problem. When I wiggle the ignition switch the turn signals and radio go on and off so I feel the issue is in the ignition switch. From what I understand the actual electronics for the switch are at the base of the sterring column behind the lower dash panel and is connected by a rod that may need adjusting.

Anonymous

  • 2 Answers
  • Posted on Jan 22, 2009

SOURCE: Rear tail / brake lights not working

the problem is not the bulb it is the connectors the bulb is connected to...rebend them so they touch....its happening on all the 2000 jeeps...email me for any more [email protected]

Anonymous

  • 6982 Answers
  • Posted on Mar 19, 2009

SOURCE: Rear Lamp Failure Message

So...posting your own solutions now???? OK...Just don't forget
who told you to check all grounds (that means both ends of the cable.) I use additional grounding on all my cars...Run a 10 gauge multi strand wire from the battery to the fender, around to the firewall. Branch there and run through firewall to the dash frame support under the lower lip of the dashboard. The other branch continues to l/f fender, attaching to a point where computer ground wires are, then terminating at the cross-bar that runs above the radiator. To make connections to body, I remove insulation but do not cut wire, just loop it around a bolt & re- tighten, then a squirt of undercoating on each. I normally also add an additional ground to one of the starter bolts. I also remove the original block ground wire and replace it with something along the lines of 00 welding cable.(I have a bunch of it from back when I needed it for re-locating race car batteries to the trunk.)

Greg

  • 70 Answers
  • Posted on Sep 16, 2009

SOURCE: divers brake light does not work with head lights on .

big problem with jeeps 98 and up should be a safety recall but is not; you need to replace the drivers side tail light assembly with a new one, from jeep or auto parts store if available. used auto parts recycler may have one but your taking a chance, used should be 40 to50
dollars new over 100

I’m happy to help further over the phone at https://www.6ya.com/expert/gregory_8e6ba270263743ac

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HI Matt,
Your issue sounds like a fault, most likely in the rear lights. Current is feeding from the brake light circuit, into the running light circuit. The most common causes are a bulb filament broken and touching the running light circuit, and loss of ground.
observe the rear lights closely and you should get a clue as to which light is failing....but if not, just pick one....
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