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Old 05-19-2012, 06:27 PM   #1
Join Date: May 2012
Location: SE NM
Posts: 5
Help with a problem with my tail lights

Hello, I am new to this forum, I checked in at the introduction area and now have a question for all of you out there that have way more knowledge than I. I have an 01 Jeep Wrangler with a problem. All of my signal lights both turn and flash and my brake lights work just fine when the headlights are off but if I turn on the head lights and try to use my turn signals then the following happens: the front signal will flash on the appropriate side but both rear signals flash together and the relay speeds up faster when the headlamps are on.

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Old 05-19-2012, 11:38 PM   #2
Join Date: May 2012
Location: SE NM
Posts: 5
Come on folks, someone has got to have an idea! I'm an not an electrical wiz, this has got me stumped, I can't figure this thing out. It's very strange.

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Old 05-20-2012, 08:35 AM   #3

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Join Date: Dec 2010
Location: Suburban Chicago and the UP of Michigan
Posts: 598
The multifunction switch would probably be a good place to start. I have had many weird things happen with my Florida TJ since it sits for months at a time. I had a similar issue and replaced both the headlight switch and the multifunction switch. Solved my problem. I am sure it was the multi function switch though. The circuit on it that controlled the 4 way flashers. I assume you have had the Jeep for awhile and all was good in the past.
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Old 05-20-2012, 10:11 AM   #4
Join Date: May 2012
Location: SE NM
Posts: 5
Yep I have had it for 8 or 9 years and never had a problem with it. Maybe I'm being dense or I'm still half asleep and I know this is a dumb question but here goes; What is the multifunction switch and where is it located? Told you it was a dumb question!
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Old 05-20-2012, 10:29 AM   #5
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Join Date: Aug 2011
Location: southern illinois, no where near chicago (allendale)
Posts: 2,276
Your turn signal lever

"It puts the lotion on its skin or it gets the hose again"
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Old 05-20-2012, 04:31 PM   #6
Join Date: May 2012
Location: SE NM
Posts: 5
Thank you guys for your help but in the end it turned out to be a very simple and free fix. I was takeing the jeep over to a friends house this morning, he happens to be a mechanic and was going to help me with the problem. On the way to his house it dawned on me what an idiot I was. When I got to his house I told him I knew what the problem was and I would not need him to fix anything, his reply was yea right. I then told him that it all came down to simply makeing sure everything was (are you ready for this) properly and sufficiently GROUNDED!
I sure felt stupid about not figuring it out alot sooner. I took care of the grounding issues and all my problems went away. Now the jeep has all it's lights working properly and just as importantly my utility now has all it's lights working also.
Thanks again

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