My signal lights do not work all the time. I have checked every fuse in the fuse box and they are good. I checked all the fuses up under the hood and they are good. I noticed that at night the signals will work sometimes but as soon as I turn the headlights on they stop working.
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Hi,
This link may be of interest to you as it explains the cause of the problem that you are having. Read through all the posts.
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@dohomer632 , Flasher being 15 years old would be a cheap part to change to rule it out and can be intermittent. If all fuses/relays/flasher/bulbs seem OK, it is probably the multi function switch, the contacts inside the switch overtime become worn, dirty and some times burnt causing intermittent signal. You could try disassembling the switch and cleaning contacts with contact cleaner and tooth brush, fine emery sand paper, or if just light corrosion a pencil eraser will work or just replace it with a new one. Use the links below for instruction on changing flasher and if need be how to change the multi function switch. Good luck.
I hope this helped you out, if so let me know by pressing the helpful button.
https://www.youtube.com/watch?v=py9JlxaD...
https://www.youtube.com/watch?v=HEZDdqyO...
http://www.jeepforum.com/forum/f11/write...
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