installed LED headlights now my fog lights don't work
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installed LED headlights now my fog lights don't work in my 1999 Dakota Sport
My low beams will not work as long as my fogs are on......................I installed LED headlights now my fog lights don't work with low beams. ..... 1.... Turn on the parking lights and the fog lights work...... 2.... Turn them off and turn on the low beams, works. Activate the high beams, they work. ......3...... Back to low beams and turn on the fog lights. This now turns on the high beams. If I Flash or turn the high beams on from here the fogs turn off but the high beams stay on as long as the fog light switch is on. Return to low beam with fogs on and the lights stay in the high beam with the fogs on...... 4..... I reinstalled the factory headlights and the lights operate correctly as from factory. Do I need a decoder or load resistors to correct this problem?................
Last edited by spider2099; Nov 17, 2018 at 11:46 AM.
Legend
Joined: Feb 2005
Posts: 8,058
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From: Fort Worth, TX
fog lights should always be off with high beams turned on. I had that "feature" bypassed and I got a ticket for having more than 4 beams on at once (2 fog, 2 low, 2 high beam). Flash-to-pass I think keeps the fogs on but i honestly don't remember anymore.
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Joined: Jan 2022
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My low beams will not work as long as my fogs are on......................I installed LED headlights now my fog lights don't work with low beams. ..... 1.... Turn on the parking lights and the fog lights work...... 2.... Turn them off and turn on the low beams, works. Activate the high beams, they work. ......3...... Back to low beams and turn on the fog lights. This now turns on the high beams. If I Flash or turn the high beams on from here the fogs turn off but the high beams stay on as long as the fog light switch is on. Return to low beam with fogs on and the lights stay in the high beam with the fogs on...... 4..... I reinstalled the factory headlights and the lights operate correctly as from factory. Do I need a decoder or load resistors to correct this problem?................
Champion
Joined: Oct 2013
Posts: 3,775
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From: Atlanta
LEDs are diodes They have polarity and sometimes the manufacturers don't get it right. When I installed my LED headlights, high beams were low and low were high. I swapped the wires around to correct it.
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Joined: Jan 2022
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From: North Dakota
Did you have to run canbus resistors when you did your swap? I also have an 03 and have my lights but if I need the resistor kit for them I'm going to wait til those come to do the swap. If they did need resistors I'd assume all running/marker lights front and rear would require the same?
Champion
Joined: Oct 2013
Posts: 3,775
Likes: 449
From: Atlanta
Did you have to run canbus resistors when you did your swap? I also have an 03 and have my lights but if I need the resistor kit for them I'm going to wait til those come to do the swap. If they did need resistors I'd assume all running/marker lights front and rear would require the same?
