wiring fog lights to auxilary switch?

[will09lane]

ok so i was just thinking about wiring my fog lights up and i was wondering what i would have to do to just wire them up to this switch? and what size wire would i use? is it just wiring the fog lights HIDs to the switch to the battery or what?

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[mtylerb]

Originally Posted by will09lane

ok so i was just thinking about wiring my fog lights up and i was wondering what i would have to do to just wire them up to this switch? and what size wire would i use?




is it just wiring the fog lights HIDs to the switch to the battery or what?

You're putting an HIG kit in there? I suggest wiring that switch from the battery through a relay and then from the battery to the relay to the HIG kit.

Something like (not to scale )

|------|
|--87--|
|--87a-|
|86--85|
|--30--|
|------|

87 - 12V -> Relay to HIG Kit 12V
87a - empty -> Don't Use
30 - 12V -> Battery to Relay
86 - Gnd -> Relay to Ground
85 - 12V -> Switch to Relay

On your HIG kit, you'll have the power coming in from the relay and then exiting via a Gnd wire in the kit. The switch will have a 12V power source (doesn't have to be directly from the battery, only a small current is needed for the relay) that, when in the on, will complete a small circuit that trips the relay to allow the larger ballast current to flow.

The above should be right, just match the numbers on the relay with what is shown above and you should be good. Just don't use 87a, otherwise you'll reverse the flow and the kit will only come on when your switch is in the off position. If you get a 5 pin relay, all the above will be there. There are also 4 pin relays that leave out either of pin 87 or pin 87a.

Hope that helps.

PS - I still don't encourage HIG kits in factory fog reflectors. If a stock projector from, say, an IS300 is modified to have the correct focal point, then that's not bad. Reflectors, however, are just glare buckets and it's more pronounced with HIG kits. Basically, if you drive with them on, you'll be blinding someone.

[yetti96]

+1 ^^^

The pins are correct. Do you have factory fog lights? If so, there is no need to the extra switch unless you want them to be separate. Also, for that switch to work with the LED the #3 pin I believe needs to be grounded to that the LED will come on when the switch is in the on positions, minor compared to the other stuff mtylerb posted.

Also, make sure the power wire coming into the 30 pin is fused properly.

[will09lane]

when your saying HIG are you meaning HID?

[will09lane]

and yall are pretty much saying one wire from the battery to the relay then another from the battery all the way through the relay to the HID's? is this correct? and what type of wire

[SSCULLY]

You would wire the switch to the relay, similar to this ( this is standard aux lamps above to be on any time the parking lamps are on )



It would look more like this with the HID lamps ( this is for headlamps, but similar idea, just use the switch part from the diagram above )

[mtylerb]

Originally Posted by will09lane

when your saying HIG are you meaning HID?

Sorry, that's my way of referring to kits.

HIG = High Intensity Glare - or kits (illegal)
HID = High Intensity Discharge - or OEM applications (legal)

It's just my way of separating the 2.