Automatic Headlights
Senior Member
Joined: Dec 2010
Posts: 12,780
Likes: 184
From: Lineville, AL
Re: Automatic Headlights
Then I would think the simplest way would be with a N/O relay driven by start/run voltage and supplying fused 12v to whatever circuit for the lights you want to come on with the ignition.
Wire, relay, fuses should be less than $10 US.
( you could run the start/run 12v going to the relay through a switch also, that would allow you the choice of having DRL's or not )
Wire, relay, fuses should be less than $10 US.
( you could run the start/run 12v going to the relay through a switch also, that would allow you the choice of having DRL's or not )
Senior Member
Joined: Dec 2010
Posts: 12,780
Likes: 184
From: Lineville, AL
Re: Automatic Headlights
Nokke: what mrmiata is reffering to is a US ( or Oklahoma ) law that requires DRL's to be OFF when headlights are ON. May not apply in Finland.
Senior Member
Joined: Sep 2011
Posts: 9,595
Likes: 26
From: Kellyville, Ok
Re: Automatic Headlights
Then I would think the simplest way would be with a N/O relay driven by start/run voltage and supplying fused 12v to whatever circuit for the lights you want to come on with the ignition.
Wire, relay, fuses should be less than $10 US.
( you could run the start/run 12v going to the relay through a switch also, that would allow you the choice of having DRL's or not )
Wire, relay, fuses should be less than $10 US.
( you could run the start/run 12v going to the relay through a switch also, that would allow you the choice of having DRL's or not )
BUT... LOL.. you do realize factory DRL's go off with headlights on..
Senior Member
Joined: Sep 2011
Posts: 9,595
Likes: 26
From: Kellyville, Ok
Re: Automatic Headlights
He didn't etch a stone or anything saying when he was coming down from the mountain did he?
Joined: Nov 2014
Posts: 19
Likes: 0
From: Finland
Re: Automatic Headlights
Then I would think the simplest way would be with a N/O relay driven by start/run voltage and supplying fused 12v to whatever circuit for the lights you want to come on with the ignition.
Wire, relay, fuses should be less than $10 US.
( you could run the start/run 12v going to the relay through a switch also, that would allow you the choice of having DRL's or not )
Wire, relay, fuses should be less than $10 US.
( you could run the start/run 12v going to the relay through a switch also, that would allow you the choice of having DRL's or not )
How hard it is to get DRLs turn off when headlights are turned on? Need it new light-switch?
Am I trying totally impossible?
Senior Member
Joined: Sep 2011
Posts: 9,595
Likes: 26
From: Kellyville, Ok
Re: Automatic Headlights
A "normally closed" relay with a key on hot supply will turn on DRLS anytime the ignition is turned on. I haven't checked but planning on tapping the headlight fuse if its "downstream" of the headlight switch for power to "open" the relay to turn them off. If not I will directly tap the headlight hot lead.
Joined: Nov 2014
Posts: 19
Likes: 0
From: Finland
Re: Automatic Headlights
A "normally closed" relay with a key on hot supply will turn on DRLS anytime the ignition is turned on. I haven't checked but planning on tapping the headlight fuse if its "downstream" of the headlight switch for power to "open" the relay to turn them off. If not I will directly tap the headlight hot lead.
Ok. thx.
Let me know Your result.
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