100w h3 bulbs in foglights?

[SpeedyDTP247]

anyone here use them? will it melt anything?

[S2central.net]

Thats gonna give you ~16A draw at 12V and ~14A at 14V so in theory you are over the designed limit for the fuses (10A dip, 10A main) and the cables.

You could *try* one side with great care and just use your hands to make sure the cables and fuses don't feel too hot - you'll need a 20A fuse of course...

The cable is supposed to be 1.5mmsq which is *probably* OK for that load, but you need to satisfy yourself that the fuses and fusebox itself aren't gonna meltdown.

Ahh hell - just noticed you specify foglights - Doh - Info I have shows 1.5mmsq coming out of foglight switch but it then splits into 1.0mmsq for each bulb - which is prolly OK for a single bulb. You would need to uprate Fuse 1 to 25A (from 15A) to carry the extra load, but the biggest problem I see here is that is drawn thru the X-contact and hence the X-relief relay which might be overloaded by an extra ~8A.

In summary I would advise against it - think that X-relay is only 40A rated so you are asking for an extra 20% which it might not have the thermal capacity for.

Paul

[s2driveruk]

out of interest (with no electrical knowledge...) what is the high rating on the bulb you could go to with stock setup. Always amazes me that nobody flashes me with the front fogs on so they are either out of alignment or just kak
Cheers
David

[mcandmar]

I wouldnt do it on stock wiring, build your own loom/relay direct from the battery to power them.

[S2central.net]

That is the only way to do it correctly - and avoid excessive load on the x-contact along the way.

Paul

[HPmuirt]

May I just remind everyone that front fogs are a waste of time and only Chav's use them!

Also, for those in Blighty, the Highway code (Rule 226) states

You MUST use headlights when visibility is seriously reduced, generally when you cannot see for more than 100 metres (328 feet). You may also use front or rear fog lights but you MUST switch them off when visibility improves (see Rule 236).

and Rule 236 states

You MUST NOT use front or rear fog lights unless visibility is seriously reduced (see Rule 226) as they dazzle other road users and can obscure your brake lights. You MUST switch them off when visibility improves.

Please note that the capitalisation and bold font is from the government, not me, so please don't use your foglights or I will be forced to remove your S2/RS2 and give it to someone more deserving

Cheers n

Si

[S2central.net]

Visibility is *ALWAYS* seriously reduced on the Audi S2 - the headlights aren't worth *****... So if its a manky night I'll often have my front fogs on to try help my HIDs. The HIDs are better than stock, but flawed by the keich projector. I find this to be a better approach than driving into a hedge/pedestrian/whatever. I can actually only drive about 70-80mph on dip beams with front fog assist at nighttime on unlit motorway - I cannot see safely beyond that. On high beam on the same piece of road its almost like daylight. Damn lights.

You must be one of those folk that flash me when my front fogs are on - not cause they are actually dazzling them - but just because they can. There was me thinking you were more liberally minded

Do you take the comedy braking distances in the highway code as gospel also ?

[mcandmar]

On some cars you can adjust the position so you can direct them down and to each side, very useful on fast back roads as it lights up the ditch each side of the road and gives you better visibility over humps and around tight bends. If you look at a rally car setup for night stages they usually have two spot lights pointing to the left/right for this reason.

My pet hate is people who use fog lights during the day, or especially in the rain as all it does is blind everybody else

[Fat Audi 80]

Visibility is *ALWAYS* seriously reduced on the Audi S2 - the headlights aren't worth *****... So if its a manky night I'll often have my front fogs on to try help my HIDs. The HIDs are better than stock, but flawed by the keich projector. I find this to be a better approach than driving into a hedge/pedestrian/whatever. I can actually only drive about 70-80mph on dip beams with front fog assist at nighttime on unlit motorway - I cannot see safely beyond that. On high beam on the same piece of road its almost like daylight. Damn lights.

You must be one of those folk that flash me when my front fogs are on - not cause they are actually dazzling them - but just because they can. There was me thinking you were more liberally minded

Do you take the comedy braking distances in the highway code as gospel also ?

Odd? I can see for bloody miles with my HID setup and rarely use the mainbeam unless really "pressing on" :mischeif:

Cheers,

Steve.

[S2central.net]

WTF - maybe my reflectors / projectors are knackered then - my lights are rubbish on dip... Especially when I compare them to the factory Xenon HIDs on the Allroad. Please gawd don't tell me I need two new lights to solve this properly.

I'm running the 2nd generation HIDs from VAGparts BTW.

[HPmuirt]

I'm with Fatty on this one Paul, my HIDs are spankingly bright and when racing down dark country lanes, I just wind the lights up to zero (I MOT the car with the light adjusters on 1 ) rather than using the dim orange main beams.

You must be one of those folk that flash me when my front fogs are on - not cause they are actually dazzling them - but just because they can. There was me thinking you were more liberally minded

Me, liberal? How dare you. Old school Victorain dad here :mischeif:

And yes, if you have your fog lights on and the road is wet, I will blind you back and call you a chav. Didn't realise you live in Cambridge and drive a Corsa

Do you take the comedy braking distances in the highway code as gospel also ?

Hell yes, with my slow old reaction times I am normally in the next county before the right leg even starts to twitch

Cheers n

Gramps

[Jas11n]

so please don't use your foglights or I will be forced to remove your S2/RS2 and give it to someone more deserving

Si

Pfft, you can try

I drove "all" the way to work today with my superbright HID fogs on.

Jas..

[S2central.net]

Have I missed a trick here - maybe I am not on the latest / greatest HID units then?

Guess I'll have to open the lamps sometime to see if anything is obviously murky about my optics. They are both the same - unless my aim is way off, but there has never been an issue at MOT where they check the beam alignment.

That or chuck them away for a chavtastic set of Moretti quad lamps.

[SpeedyDTP247]

Thats gonna give you ~16A draw at 12V and ~14A at 14V so in theory you are over the designed limit for the fuses (10A dip, 10A main) and the cables.

You could *try* one side with great care and just use your hands to make sure the cables and fuses don't feel too hot - you'll need a 20A fuse of course...

The cable is supposed to be 1.5mmsq which is *probably* OK for that load, but you need to satisfy yourself that the fuses and fusebox itself aren't gonna meltdown.

Ahh hell - just noticed you specify foglights - Doh - Info I have shows 1.5mmsq coming out of foglight switch but it then splits into 1.0mmsq for each bulb - which is prolly OK for a single bulb. You would need to uprate Fuse 1 to 25A (from 15A) to carry the extra load, but the biggest problem I see here is that is drawn thru the X-contact and hence the X-relief relay which might be overloaded by an extra ~8A.

In summary I would advise against it - think that X-relay is only 40A rated so you are asking for an extra 20% which it might not have the thermal capacity for.

Paul

thanks for the info. i'm currently using 80w/85w h4 bulbs for my headlights and havent had any issues yet

[Jas11n]

Have I missed a trick here - maybe I am not on the latest / greatest HID units then?

Guess I'll have to open the lamps sometime to see if anything is obviously murky about my optics. They are both the same - unless my aim is way off, but there has never been an issue at MOT where they check the beam alignment.

That or chuck them away for a chavtastic set of Moretti quad lamps.

Mine have always been good under power of HID's, but my bro's weren't.
He had a slight misty film of dirt on the inside of the glass and also the same dirty film (no, not porn) on the front and rear of the actual fish eye ellipsoidal lense.
A clean up made a hell of a difference.
Just be careful not to rub that reflective coating off while in there, it seems to come off even if you look at it too hard .