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2002 jeep tj blowing running lights 20 amp fuse when brake is applied?

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Pull down both rear light asssemblies.. pull out all bulbs then see if blows fuse if good replace all bulbs

Posted on Sep 11, 2009

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Blinkers and break lights in 1999 Jeep Wrangler Sport Do Not Work, how do I fix?


well first is the fuse. (if all else works ok, not stated)
no shorted bulbs, they can short. like that. and blow fuse.
the free book is here, see TJ? 1999
see last line WIRING, click that?
id work brakes first, 10x more simple.
see page. ,8w-51-4 (pdf page 134)
http://www.jeep4x4center.com/knowledge-base/index.htm?utm_source=cj#service

see fuse 2? brakes
it feeds brake switch .
id bet the fuse is blown,
if blown remove 4 lamps , blow now, wirnng shorts rear. (hitch hacks)
if not blown check wire, white-tn (tan) for 12v when brakes are applied, if 0v move forward do switch, brake,
the point that has 12vdc on one side and 0v other is bad.
wire, connector or switch.
if voltage is found to be low, that is a short.

Mar 20, 2015 | 1999 Jeep Wrangler

1 Answer

Fuel pump fuse blows while under load. 1998 Jeep TJ 4.0 automatic Only blows while driving. F16 is the fuse. Traced all wires from pump, wiggled, jjiggled, squeezed and bent every wire, harness, plug......


Sounds like fuel pump worn and drawing more amps under loaf, find hot wire to pump and amp test. Shoul be between 7 to 17 amps any more and pump due to fail soon. Good luck.

Oct 06, 2014 | Cars & Trucks

2 Answers

Tail lights work fine but no brake lights. Fuse keeps blowing whenever I replace the fuse.


check wiring on shift columb going to turn signal switch it could be the switch it self I had this happen on a new chevy truck hope this helps good luck jerry

Feb 16, 2013 | 2001 Jeep Grand Cherokee

1 Answer

Which fuse box do i check for fuse for cruise control


There is actuly 2 differant fuse #12 the brake fuse #12 10 amp and fuse #1 the stop and haz 20 amp .But neighter are likely the problem . There is another brake switch for the cruise control called the TCC brake and cruise control relese switch that tells the transmission when the brake is applyed and shut of the cruise control . This is more likely the problem its up under the dask near the steering colluom follow the wires from the main brake switch on the pedel if you have a standard then it will run through the clutch switch as well .Fuse #12 also controls the muilty function switch but fuse #1 is the brake input switch . So if the lights and blinkers work i would look at the TCC brake switch first thank you

Jul 15, 2011 | 2002 Chevrolet TrailBlazer

2 Answers

Lost owners manual and was testing fuses at the junction box. do you have any info. as to what each fuse controls. i lost my dash controls ex. speedometer oil guage . its 1999 jeep cherokee ltd


Here is the diagram you were looking for, hope this helps :)
fixurupr_4.jpg fixurupr_5.jpg

Cavity Fuse Color Description F1 -- -- Spare F2 -- -- Spare F3 10 Amp Red Headlight high beam left F4 15 Amp Lt. Blue Flasher, hazard switch (see Junction Block diagram above for location of turn signal Flasher relay - Mopar p/n 4686094) (Repair tip: WJ flasher repair)
F5 25 Amp Natural Radio amplifier F6 15 Amp Lt. Blue Park lamps F7 10 Amp Red Interior lights F8 15 Amp Lt. Blue Overhead console, rear wiper, IP lights, rear flipper glass solenoid, power locks F9 20 Amp Yellow Power outlets F10 20 Amp Yellow Adjustable pedals (2002-2004 only) F11 10 Amp Red Rear window defrost indicator F12 10 Amp Red Auto shutdown relay / "Fuel" F13 -- -- Spare F14 10 Amp Red Headlight low, left F15 10 Amp Red Headlight low, right F16 10 Amp Red Headlight high, right F17 10 Amp Red Instrument cluster, diagnostic connector F18 30 Amp ? Trailer tow F19 10 Amp Red Anti-lock brakes F20 10 Amp Red Ignition Run / Heated seats / A/C Heater control / Flasher - Left and Right turn signal switch sense F21 10 Amp Red Ignition Run / Start - PDC (Power Distribution Center) F22 10 Amp Red Ignition Run / Start F23 15 Amp Lt. Blue Brake switch F24 15 Amp Lt. Blue Foglamps F25 20 Amp Yellow Accessory delay relay (sunroof) F26 15 Amp Lt. Blue Cigar F27 15 Amp Lt. Blue Rear fog (export) F28 10 Amp Red Body Control Module, Acc/Run F29 10 Amp Red Rear wiper switch. Washer motors F30 15 Amp Lt. Blue Radio F31 10 Amp Red Ignition Start F32 10 Amp Red Ignition Run / Start - Airbag F33 10 Amp Red Ignition Run / Only - Airbag C1 20 Amp Yellow Wiper (Circuit Breaker) C2 20 Amp Yellow Seats (Circuit Breaker) C3 -- -- Spare

May 16, 2011 | 1999 Jeep Cherokee 4WD

2 Answers

98 jeep tj.brake light fuse keeps popping but only brake light fu


if it is rusty underneath you could have a shorted wire

Jan 09, 2010 | Jeep Wrangler Cars & Trucks

1 Answer

What size fuse goes in position #4? What are


From the Jeep TJ Wrangler 2004 - Owners Manual (Section 7, Page 255):
Fuse 4 -->> 10 Amp Red -->> Door Switch Defeat
Fuse 16 -->> 10 Amp Red -->> Headlamp Aim (Export only)
Fuse 20 -->> 20 Amp Yellow -->> Transmission: Manual - Clutch Interlock switch by-pass Automatic - Ignition Starter Circuit

I really hope helps with this (remember rated this help). Good luck.

Dec 16, 2009 | 2003 Jeep Wrangler

1 Answer

No more brake lights on my 2000 TJ,is there a fuse for rear brake lights?


Yes, there are 2 actually. One located inside the vehicle and one located under the hood. This could also be the brake switch located on the pedal. Check for a break in the wires on both light units especially if you have been four wheeling.

Nov 03, 2009 | 2002 Jeep Wrangler

1 Answer

98 jeep tj, dash light/taillights/licence plate light don't work


disconnect head lights, and replace fuse. Then turn the light back on to see if it blow a fuse again. if not, plug on light in at a time. You might have a bad headlight???? then unplug that one if nothing happens. Then plug the other one in. It could also be a bad taillight bulb. I have had bad tail light bulbs. Do all of them, one at a time.

Dec 12, 2008 | 1998 Jeep Wrangler

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