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Unread 10-17-2015, 02:07 PM   #1
TastemyToast
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1992 YJ Wrangler 
 
Join Date: Oct 2015
Location: Sevierville, TENNESSEE
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Turn signal and brake lights not working

Title says it all, bulbs are fine, where do I go from here, really new to this.

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Unread 10-17-2015, 02:12 PM   #2
TastemyToast
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1992 YJ Wrangler 
 
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Hazard and running lights work.
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Unread 10-17-2015, 04:54 PM   #3
TastemyToast
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It's a 92 4.0, all the fuses under the dash are good as far as I can tell.
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Unread 10-17-2015, 05:09 PM   #4
dancytron
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1990 YJ Wrangler 
 
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Well, start out by cleaning things up. Take all the bulbs out of their sockets, clean stuff up, put some dielectric gel on the base of the bulbs and put them back together. The ground for the brake lights/tail lights is the mounting bolts. Take them off, clean the contacts up until their are nice and shiny, and put them back together.

Switch the flasher for the hazards and the blinkers (the two round things at the fuse box) to see if that fixes the blinkers.

I know you say the bulbs are good, but if that doesn't work, I'd think the next thing to check is if the bulbs are really good.

After that, report back.
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Unread 10-17-2015, 08:04 PM   #5
Drednot
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Fronts and rears? Just rears?

If the hazards and taillights work, its up front somewhere unless there is some trouble with a trailer wiring plug. From the body harness connector back, its the same wires for hazards and brake and turn. The magic happens in the turn signal switch

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Unread 10-17-2015, 08:37 PM   #6
TastemyToast
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Fronts and rears aren't working. I'm at work so I'll have to check it in the morning. Those wiring diagrams are really helpful.
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Unread 10-18-2015, 03:34 PM   #7
TastemyToast
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So, replaced the fuses and relays, still no lights. Got a new turn signal switch from autozone, gonna put that in tomorrow. All the wires are testing good, so hoping that is going to fix the problem, I'll update tomorrow.
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Unread 10-19-2015, 07:21 AM   #8
Que89YJ
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1989 YJ Wrangler 
 
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Hazards and turn signal are both not working they are on separate fuse feeds. If they both stop working it is usually the switch.
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Unread 10-20-2015, 12:22 PM   #9
TastemyToast
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Replaced the turn signal switch, now the brake lights work, but signals don't. Any ideas?
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Unread 10-20-2015, 01:28 PM   #10
Drednot
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backup lights work?
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12 Cherokee 4x4,3.7L,
"Non Vi Sed, Arte"
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Unread 10-20-2015, 01:44 PM   #11
Que89YJ
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Hazards?
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Unread 10-20-2015, 01:51 PM   #12
TastemyToast
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Backups and hazards both work. Just no turn signals.
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Unread 10-20-2015, 02:24 PM   #13
Drednot
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check for battery voltage at/through fuse #4
check for battery voltage at flasher socket terminal "A"
Check for battery voltage at hazard/turn switch connector terminal "L"
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91 YJ Sahara, 4.0L, AX-15/NP231, D30/D35
12 Cherokee 4x4,3.7L,
"Non Vi Sed, Arte"
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Unread 10-20-2015, 03:22 PM   #14
TastemyToast
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Update, I forgot to put the relay and fuses back in. Turn signals are fine now, everything is working 100%.
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Unread 10-20-2015, 10:12 PM   #15
Drednot
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LOL
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"Non Vi Sed, Arte"
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