red and yellow wire in front of rad

[rwdstag]

Anyone got any idea what the red and yellow thick wire does that is in front of the radiator in the wiring loom ??

[trunt]

Red with a thin yellow tracer should be fog lights

[DJT]

Correct. Fog lights. The other end is behind the carpet beside the centre console in the driver’s footwell.

[trunt]

Mk2 headlight switches may have a fog light position so it may go to the steering column connector

[DJT]

Mk2 headlight switches may have a fog light position so it may go to the steering column connector

Mk1 switches had the foglight position, Mk2 do not.

[trunt]

Ahah. I knew they were different and just assumed as my Mk2 has the fog lightswitch, I know because it was frazzled and I had to replace it in my loom..

So I’ll trump that with a Mk2 federal which also has a fog light position!

[rwdstag]

So mine is a July 74 car no fog light switch but has the wires ??
why ??
Also does anyone use that wire foram electric fan?
Only asking as I don’t even have one but interested

[DJT]

So mine is a July 74 car no fog light switch but has the wires ??
why ??
Also does anyone use that wire foram electric fan?
Only asking as I don’t even have one but interested

The Mk1 Stag has the fog light switch and the red/yellow wire runs from it to the near side chassis rail near the radiator overflow bottle. The Mk2 has the wire as described above. Use it to supply power to front fog lights via an auxiliary switch under the dash.

[PeteJS]

My Federal mk1 has the fog light switch incorporated into the column rotary switch and uses the red and yellow wire in the loom.
US dealer fitted fog lights are present and function, however in a very old fashioned (but probably correct) manner, in that fog light activation turns the dip beam off.

[mole42]

That’s because the fog light lens produces a flat beam which, if fitted low down (mine are under the bumper) will penetrate further in fog without scattering light back into your eyes.

I think it’s still legal to use lights in this fashion in the UK, and it’s especially good if the rear fog light is wired into the same circuit.

i just checked and yes, it’s legal to use two front fog lights:

http://www.legislation.gov.uk/uksi/1989/1796/schedule/6/made

[Chix]

Thats because the fog light lens produces a flat beam which, if fitted low down (mine are under the bumper) will penetrate further in fog without scattering light back into your eyes.

I think its still legal to use lights in this fashion in the UK, and its especially good if the rear fog light is wired into the same circuit.

i just checked and yes, its legal to use two front fog lights:
http://www.legislation.gov.uk/uksi/1...chedule/6/made

Hi mate, can you tell me, the red and yellow wire, is that enough to power two fog lights at the front, or is that to be used as the 'switch' wire, with power coming from somewhere else?

Also, if I wanted the fog lights to come on with full beam, rather than instead of, how would I achieve this?

Thanks!

[dasadrew]

I thought the purpose of foglights (apart from impressing other road users) was to provide a diffuse beam pattern which reflects back from the moisture particles much less than a main beam. Personally I can hardly see in fog with a main beam, and living on the Danube flood plain I can say I've a lot of experience driving in fog! Can't think of any reason to have fogs and main on at the same time.

Drew

[mole42]

Hi mate, can you tell me, the red and yellow wire, is that enough to power two fog lights at the front, or is that to be used as the 'switch' wire, with power coming from somewhere else?

Also, if I wanted the fog lights to come on with full beam, rather than instead of, how would I achieve this?

Thanks!

That Red/Yellow wire is big enough to supply the current for two 55W fog lights (that's the UK legal maximum). The main/dip are switched off when using the fogs because, as I wrote in post #10, "the fog light lens produces a flat beam which, if fitted low down (mine are under the bumper) will penetrate further in fog without scattering light back into your eyes." Using the dip/main lamps in fog will effectively blind you so the switching de-activates them. If you wanted to repurpose that Red/Yellow wire you'd have to find the other end up under the steering column, detach it and connect to a new circuit. As it happens, mine has a seperate circuit because, being an early Mk2 the light switch switch has not got the Fog position although the Red/Yellow wire is present!

[Chix]

That Red/Yellow wire is big enough to supply the current for two 55W fog lights (that's the UK legal maximum). The main/dip are switched off when using the fogs because, as I wrote in post #10, "the fog light lens produces a flat beam which, if fitted low down (mine are under the bumper) will penetrate further in fog without scattering light back into your eyes." Using the dip/main lamps in fog will effectively blind you so the switching de-activates them. If you wanted to repurpose that Red/Yellow wire you'd have to find the other end up under the steering column, detach it and connect to a new circuit. As it happens, mine has a seperate circuit because, being an early Mk2 the light switch switch has not got the Fog position although the Red/Yellow wire is present!

Thanks, that's really helpful!