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Unread 08-11-2011, 11:41 PM   #1
91BoD
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1991 YJ Wrangler 
 
Join Date: Apr 2010
Location: Marysville, WA
Posts: 644
No brake lights!

Fuses good
Brake switch good
blinkers work
Parking lights work
Reverse lights work... what gives? Secret fuse or relay?

Thanks for any hints

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Unread 08-11-2011, 11:52 PM   #2
R3V413
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2000 TJ Wrangler 
 
Join Date: Aug 2011
Location: Blissfield, MI
Posts: 179
How do you know that the brake switch is good? Have you checked your ground wires? Have you checked your bulbs?
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Unread 08-11-2011, 11:56 PM   #3
91BoD
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1991 YJ Wrangler 
 
Join Date: Apr 2010
Location: Marysville, WA
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Took it out and tested with a multimeter.
Haven't checked all of them, locations?
Both bulbs are good, blinkers use the same circuit.
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Unread 08-12-2011, 02:49 AM   #4
kphimself
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2006 TJ Wrangler 
 
Join Date: Nov 2010
Location: Va Beach, va
Posts: 196
Is it the right light bulb. I've seen people stick a 1156 in a 1157 socket and it won't work becouse the 1157 is a dual filament bulb and the 1156 isn't.
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Unread 08-12-2011, 05:25 AM   #5
alilredjeep
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1992 YJ Wrangler 
 
Join Date: Sep 2003
Location: Opp, Alabama
Posts: 340
The turn signal switch may be bad even though that the blinkers work because Mother Chrysler used to wire the brake lights through the emergency flashers years ago.
I'm not sure if that was still the norm in the 90s.
Just for the record, I've replaced two turn signal switches in the past when I had brake light problems and that is what solved my problems.
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RED JEEP CLUB MEMBER #92

'92 WRANGLER, 2.5 Litre, 5 Speed, Rag Top, Superwinch LP8500, Cepek 130W Driving Lights, 31x10.50/AT with no lift, Of course! It rubs!
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Unread 08-12-2011, 05:49 AM   #6
Grenadierbeef
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1992 YJ Wrangler 
 
Join Date: Jun 2011
Location: Carrollton, Georgia
Posts: 9
Had the same issue a couple of weeks ago during reassembly of my 92 yj after bedliner install. Basically the brake switch can and will give you a false reading. While installed no brake lights. When removed from jeep switch was working. I did find in my trouble shooting a fuse that was loose because some where in this jeeps past somebody thought out was a good idea to jam something into the fuse block. Fixed that issue and reinstalled brake switch. Brake lights work however, now sometimes they will not cut off. Brake light switch is sticking. Just my 2
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Unread 08-12-2011, 05:58 AM   #7
Rammer500
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1999 TJ Wrangler 
 
Join Date: Jul 2009
Location: Avonmore,PA
Posts: 464
Do you have power going to the switch and back out? Check using a test light. I've seen switches test good with a meter, but the contacts can't pass enough power to light the lights. The meter doesn't put any load on the switch. Next, just follow the circuit to the turn signal swtich, checking connections and wiring.
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99 TJ 4.0 5 Speed Sport, 2.5" Rough Country Lift, 1.25 Body Lift, 1" MML, SYE and CV shaft,JKS Quicker Disconnects, 33x10.50 BFG Mud Terrains,4.56 gears, Super35 w/ Ected Locker, Warn 8274 and some other stuff.
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Unread 08-12-2011, 07:36 AM   #8
muddy93
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1987 FSJ Wagoneer 
 
Join Date: Aug 2007
Location: Templeton, Indiana
Posts: 1,908
Did you pull the housings off of the tub and check the mounting screws for rust?
When I had issues with my brake lights, they were doing all kinds of strange things, it ended up being a bad ground connection (stock lights use the mounting screws to ground to the tub).
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Unread 08-12-2011, 02:06 PM   #9
91BoD
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1991 YJ Wrangler 
 
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Location: Marysville, WA
Posts: 644
Thread can be deleted, found another blown fuse. All is working now.
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