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Wiring Fogs to brights


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get a generic 30 amp relay

the package will show wich terminals do what

find one of the wires off the head light highbeams tap it run the wire to one side of the relay field coil run the other side of teh relay field coil to ground

 

the other 2-3 connections depending on relay will be you power in

and switched power out to power the lights

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Here's the best way, IMO. Hook a lead from your battery with an inline fuse or circuit breaker to the 30 terminal on the relay. Use a test probe or multimeter or wiring diagram to find the highbeam wire on one of your headlights. Use a T-tap or somehow splice it into the 86 terminal on the relay. The 85 terminal gets grounded, and the 87 goes to both of your fogs, wired in parallel. Ground the fogs, and you're done. Make sure the fuse or circuit breaker you're using is only slightly higher amperage tolerance than the fogs you're using.

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Ah sorry guys this info is not entirely correct as far as Subarus are concerned.

 

The use of a relay is correct

BUT

 

Our headlights use a ground control system

The high beam wire at the head lamp goes to ground when

that element is selected.

When this wire is connected to one side of the relay coil,

the other side of the relay coil must be supplied positive battery voltage.

This voltage should be fused and will be connected to the relay

contact arm. The contact point the arm swings to is wired to the aux lamp.

The other side of the aux lamp is grounded

 

If you care to give the type of Subaru you are wanting to do this to

we may be able to give you wire colors and I am one of the ones who has this set up. I can suppy a wiring diagram if you email me.

All four aux lamps light when the high beams are selected.

 

 

http://www.westol.com/neper/withpugs4.JPG

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Sorry guys, but fog lights and high beams are a contradiction...you are not supposed to use your high beams in the fog, all it does is throw more light back at you, actually reducing your visibility.

 

just two cents from a former long haul truck driver (12 years and about 1.5 million miles)......

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JoAnne and Subynut are correct, and make a very good point

but

in rural sections having the sides of the road illuminated is a white tail "watch out" in un-fogged conditions,

if ya'll know what I mean?

Plus, I was just answering the question.

 

Mine are all driving lights and have the close pattern reflectors and lens.

They therefore fit the description of high beam aux. lights.

 

Subfly, yes I rewired the white corner lamps as turn signals,

leaving the yellow corners as my running lamps.

They are separate lamps.

 

It is an easy modification

with the added bonus of having your front turnsignals

visable from the side.

 

Hope this makes it all clear as pea soup

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  • 1 year later...

Hi I would mutch appriciate a copy of this wiring diagram. This ground system has me beat.I have a 89 leone wagon ea82 hi/low 5 speed manual

Many thanks in advance.

Ah sorry guys this info is not entirely correct as far as Subarus are concerned.

 

The use of a relay is correct

BUT

 

Our headlights use a ground control system

The high beam wire at the head lamp goes to ground when

that element is selected.

When this wire is connected to one side of the relay coil,

the other side of the relay coil must be supplied positive battery voltage.

This voltage should be fused and will be connected to the relay

contact arm. The contact point the arm swings to is wired to the aux lamp.

The other side of the aux lamp is grounded

 

If you care to give the type of Subaru you are wanting to do this to

we may be able to give you wire colors and I am one of the ones who has this set up. I can suppy a wiring diagram if you email me.

All four aux lamps light when the high beams are selected.

 

 

http://www.westol.com/neper/withpugs4.JPG

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