Wierd Turn Signal and Brake light issue,,,, - JeepForum.com
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Unread 04-09-2013, 08:58 PM   #1
Robob69
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Wierd Turn Signal and Brake light issue,,,,

OK this is strange...

Tonight I am driving and I am loving my LED Tail/Brake light Upgrade when I look back at a stop sign and I notice that my Left Brake light is out...
So. I get to the next stop sign where again I am turning right and I see that my Left Stop Light is on until I turn my Right Turn Signal on... Now I turn my Left signal on and the Right Brake light stays on...

Do I have a Turn Signal Switch gone out?

This may have been going on forever and I never knew because the freaking OEM lights were so dim you had to use a flashlight to see if they were working,,

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Unread 04-10-2013, 10:04 PM   #2
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Anybody have a clue?
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Unread 04-10-2013, 10:22 PM   #3
GrantYJ
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Do you have enough resistance to trip your blinker relay? If you don't, it'll do what you're describing. If you do have enough resistance, it's most likely a ground issue.
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Unread 04-10-2013, 11:09 PM   #4
dhunt09
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I'm having a similar issue where my left brake light will only work if the left turn signal has been engaged and will work normally until the right signal is used.

I'm sure they're related issues so I'll be following along!
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Unread 04-11-2013, 09:01 AM   #5
Robob69
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I replaced the flasher with an electronic flasher. The right side works perfect. Only the left side will do this..
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Unread 04-11-2013, 10:24 AM   #6
BretB
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Quote:
Originally Posted by GrantYJ View Post
Do you have enough resistance to trip your blinker relay? If you don't, it'll do what you're describing. If you do have enough resistance, it's most likely a ground issue.
^^This is a very common cause written about.
The variance in your symptoms is odd, but I want to add my .02 on signal experience and LEDs:

Before I added LED's, I had issue of using my turn signal, it would remain solidly lit, and turned out I just had a front bulb burned out - so check all your bulbs first.

I will add, though, that I never addressed the resistance issue and only issue is a split second delay in the turn signal activating now... guess I lucked out.
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Unread 04-11-2013, 10:30 AM   #7
Robob69
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All bulbs are good. Everything is now LED but the front parking/turn signals only bc I have not gotten them in yet. The turn signal works perfect... just that I have no brake light in that side when the right signal is on..... Strange..
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Unread 04-11-2013, 12:54 PM   #8
b_a_mech
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Id have to see the wires to be sure but it sounds like either a ground issue or if your lights had two or three wires coming for hook up. If it had two then it is not a dual setup...meaning when you put your turn signal on it flashes only.
If it has three wires it is a dual and when you put the turn signal on it flashes but light stays on just gets brighter for the turn indication....does that make sence?? Its always easier for me to see it to know for sure...I just changed over to LED and had to swap wires around after first power up....
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