pushing hazard button burns out flasher and blows fuse - Jeep Wrangler Forum

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Old 07-24-2011, 12:26 PM
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pushing hazard button burns out flasher and blows fuse

Need help!! .....all turn signals, brake lights, marker lights work OK so I know there is not a short there..when I try to turn hazard lights on there is a quick buzz as the flasher burns out and fuse blows...I replaced the turn signal/hazard switch thinking there was a short in there and same problem!...any ideas where to look next? ...tia

this is a 2004 jeep wrangler
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Old 11-19-2011, 09:24 AM   #2
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I have the same problem. Been doing it for two or three years now. I thought it may have been the trailer light harness shorting out. Disconnected that, still does it. If you figure it out, let me know! I will do the same.

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Old 11-19-2011, 10:14 AM   #3
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You have two separate systems, and two separate fuses for the turn signals and the hazard flashers.

Turn signals are fused on one fuse through an ignition feed.
Hazards are fused on another fuse through a battery feed.

Those two fuses feed the flasher, to the multifunction switch.
One to the turn signals (ignition powered fuse) the other (battery powered fuse) to the hazards.

Why? So that the hazards work with the ignition off, for safety reasons.

Anyhow, if all is working with all the lamps except the hazards, look for a short on the battery feed fused lead, between the switch and flasher.

It sounds like when the switch is turned on it's completing a circuit to a dead short.
Thus blowing out the flasher and fuse.
97 Sahara, 74 Renegade, 72 CJ5, 55 Willy's (the Beast) Boss 302, 6:34 gearing, Bose 901 speakers.
God I miss that Jeep. Forgot the kinda Jeep, 80 SX4.
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