Want fog lights independent of headlights
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Join Date: Sep 2012
Location: Kapiti Coast. Wellington. NZ
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Volvo Wiring Diagrams
My 2002 V40 is able to have the foglights operating with the park lights only activated if one does not wish to have the headlights on also. (low or high beam)
The rear foglight on the drivers side however only works if the headlights are on also.
My 2002 V40 is able to have the foglights operating with the park lights only activated if one does not wish to have the headlights on also. (low or high beam)
The rear foglight on the drivers side however only works if the headlights are on also.
Last edited by difflock54; 05-08-2014 at 07:55 PM.
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This is my favorite, but the diagrams are correct for a 95. A 97 might be somewhat different.
Volvo 850 Maintenance And Service Documents
On the diagram, you can see that there is a violet wire running from the headlight relay to the fog light relay (through the bridge). I assume (have to assume, based on the diagram) that wire is only hot when you have dim headlights. I don't really see any other way it could work.
So the headlight relay and the "bridge" are both supposed to be in the central electronic unit. As it happens, I just cut one out of a 97 last week, but I don't know what a bridge is.
I found this purple wire. The headlamp relay is on the upper face of the CEU, I assume you can find that. The fog lamp bridge is at the bottom left of the inside portion, left if you are looking at the relay side, not the wire side.
Not easy to get to. Since I was looking at a 95 wiring diagram, I would not assume 100% that is the right wire. As always, splice it back together if it's not the right one, ha ha.
Volvo 850 Maintenance And Service Documents
On the diagram, you can see that there is a violet wire running from the headlight relay to the fog light relay (through the bridge). I assume (have to assume, based on the diagram) that wire is only hot when you have dim headlights. I don't really see any other way it could work.
So the headlight relay and the "bridge" are both supposed to be in the central electronic unit. As it happens, I just cut one out of a 97 last week, but I don't know what a bridge is.
I found this purple wire. The headlamp relay is on the upper face of the CEU, I assume you can find that. The fog lamp bridge is at the bottom left of the inside portion, left if you are looking at the relay side, not the wire side.
Not easy to get to. Since I was looking at a 95 wiring diagram, I would not assume 100% that is the right wire. As always, splice it back together if it's not the right one, ha ha.
Last edited by firebirdparts; 05-09-2014 at 11:14 AM.
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Just to complete this thread, I grabbed the 12 volts from connector bay 24/21 the green 12 pin connector. Took the 12v from pin 12 (yellow-Violet). Goes to the cigarette lighter fuse.
Now to complete the project I plan on putting some CREE H3 LED lamps and then just run these as a daytime running lights.
Txs all.
Now to complete the project I plan on putting some CREE H3 LED lamps and then just run these as a daytime running lights.
Txs all.
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Sorry I am late. Here is a post from many years ago using the factory switch.
https://volvoforums.com/forum/volvo-...ng-help-41438/
https://volvoforums.com/forum/volvo-...ng-help-41438/
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HelgaTheS80
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