55w bulbs up to 100w ? - Jeep Wrangler Forum

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Old 01-05-2013, 08:32 PM   #1
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55w bulbs up to 100w ?

question
on my hella 500 fogs . they have 55w bulbs.. if i go up to 100w bulbs will it burn out anything ?


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Old 01-05-2013, 08:37 PM   #2
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You'll need to upgrade the wiring to handle the load of 100w bulbs.

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Old 01-05-2013, 10:18 PM   #3
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The best solution is to wire in load reduction relays, cube relays some people call them. Basically you leave the wiring alone but wire these in so when you turn on the fog lights the relay supplies power to the lights. The relays will get power directly from the battery. Sounds confusing but really simple once you know the basics. There are a bunch of schematics on the forum.
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Old 01-05-2013, 10:23 PM   #4
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Yes your jeep if you don't rewire with relays.
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Old 01-05-2013, 11:11 PM   #5
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Quote:
Originally Posted by Bgtklbx View Post
The best solution is to wire in load reduction relays, cube relays some people call them. Basically you leave the wiring alone but wire these in so when you turn on the fog lights the relay supplies power to the lights. The relays will get power directly from the battery. Sounds confusing but really simple once you know the basics. There are a bunch of schematics on the forum.
The chances of 55W lights (including the stock fogs) being wired with large enough wire for 100W lights is slim. In other words, don't leave the wiring alone. For 100W lights, I'd run 12ga. wire.
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Old 01-06-2013, 07:25 PM   #6
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I had hellas with 100w bulbs on a previous vehicle i owned and never had an issue. I used 14 ga wire. Also my two lights by the windshield on my jeep are 100w and ran with 14ga wire no relay just fuse protected. 14 guage wire is good for 20 amps.
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Old 01-06-2013, 08:29 PM   #7
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i have 100 KC daylighter on the stock wiring on my 1998 sahara and have no problems
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Old 01-07-2013, 08:50 PM   #8
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Originally Posted by Patrick H

The chances of 55W lights (including the stock fogs) being wired with large enough wire for 100W lights is slim. In other words, don't leave the wiring alone. For 100W lights, I'd run 12ga. wire.
If you use relays to power the fog lights it won't matter what size the wire is...your only switching on the relay. From the relay you can then use the heavier wire.
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Old 01-07-2013, 10:28 PM   #9
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What are you hoping to accomplish using 100 watt bulbs in a fog light?
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Old 01-07-2013, 10:32 PM   #10
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The wire will turn into a resistor and heat up and possibly melt, which may or may not cause a fire. I would just upgrade the wiring if I were you.

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