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Add Rear fog lights to non RoW 964?

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Old 02-28-2018, 09:12 PM
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Ralph3.
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Default Add Rear fog lights to non RoW 964?

Some questions on RoW rear fog lights. I have been digging through the forum but haven't been able to find answers to my questions.

Has anyone added this feature to their US or Canadian 964?

Is the wiring for the switch included in the US wire bundles?

Any modification to the fuse box?

Any additional parts required besides switch and rear lights/center reflector?
Old 02-28-2018, 09:20 PM
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Silvertarga
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I did not find any hookup in the rear for fog lights when I added the Euro center reflector so I made those "fog" lights additional brake lights instead..
Old 03-01-2018, 06:41 AM
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LM964
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Originally Posted by Silvertarga
...so I made those "fog" lights additional brake lights instead..
Interesting. Not legal here in the UK. Wanted to, but no can do.

I'd be surprised if there isn't some standard wiring in the loom already for this (but tucked out the way). Have you checked the US wiring diagrams for this?
Old 03-01-2018, 06:54 AM
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Didnt look at the diagrams and didnt look under dash, once I saw that there was no hook up for the fogs at the tail i just went with brake lights

LM964 I would think that if you got the bulb holders/socket for the dual filament bulbs you could make the fogs additional brake lights and still have the fog function..
Old 03-01-2018, 07:24 AM
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Cropped diags below from a '90 model (later models appear the same). Without looking I'm not sure what the exception M576 option/variant is. Hope these help.


Old 03-01-2018, 10:00 AM
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Deserion
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Originally Posted by LM964
Without looking I'm not sure what the exception M576 option/variant is.
M576 - Without rear fog lamp, for what it's worth.
Old 03-01-2018, 10:03 AM
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Originally Posted by Deserion
M576 - Without rear fog lamp, for what it's worth.
Ha, thought so..! Ralph, do you have in the driver's manual, or on the front bonnet, the options sticker? Maybe this option code appears there (not neccessarily though).
Old 03-01-2018, 01:04 PM
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Looked at the sticker, didn't have M576 listed but it was originally a California car so we know it doesn't have rear fog lights. (964-640)
I have a center reflector with fog lights on the way, thinking of buying another fog light switch. Thought it would be fun to see if I can make them functional without too much work. When I had my clock and speedometer out I saw some extra plugs back there. Didn't pay much attention to them but I am going to replace the head unit in the future and I will look for any that fit the switch. When you look at the wire diagram it looks the wires might be there. With other manufactures it is common practice to use the same wire bundles and prevision for all options, not sure about Porsche.

Last edited by Ralph3.; 03-01-2018 at 01:06 PM. Reason: spelling
Old 03-01-2018, 05:21 PM
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cobalt
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Originally Posted by Ralph3.
Looked at the sticker, didn't have M576 listed but it was originally a California car so we know it doesn't have rear fog lights. (964-640)
I have a center reflector with fog lights on the way, thinking of buying another fog light switch. Thought it would be fun to see if I can make them functional without too much work. When I had my clock and speedometer out I saw some extra plugs back there. Didn't pay much attention to them but I am going to replace the head unit in the future and I will look for any that fit the switch. When you look at the wire diagram it looks the wires might be there. With other manufactures it is common practice to use the same wire bundles and prevision for all options, not sure about Porsche.
You do realize the US reflector has the fogs already installed? You can just dermal the opening and fit a spare socket in place. I cut mine out and use them as a 4th and 5th brake light. This pair is dark tinted.
Old 03-01-2018, 07:09 PM
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Originally Posted by cobalt
You do realize the US reflector has the fogs already installed? You can just dermal the opening and fit a spare socket in place. I cut mine out and use them as a 4th and 5th brake light.
I knew that, just happened to find a used RoW reflector, if this doesn't work out I may try that brake light mod.
Old 05-24-2019, 10:24 PM
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Finally pulled my old Alpine radio to start the installation of a Continental radio in my cab. With the radio out I had access to the area around the fog light switch and there was a unused plug in the wire bundle. Plugged in another switch for the rear fog lights turned the key on, turned on the front fog lights then the rear fog light switch and everything lights up. Opened up the blank between fog light switch and the lighter and installed the rear switch all done. Hardest part was getting the old radio out.
Old 05-26-2019, 11:57 AM
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Which Alpine model? There's a 7380 in my to-do pile that needs to be installed sometime. Would rather the same style but CD player like 7909 or so.
Old 05-26-2019, 12:34 PM
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Originally Posted by salty87
Which Alpine model? There's a 7380 in my to-do pile that needs to be installed sometime. Would rather the same style but CD player like 7909 or so.
Mid 90's CDM-7825
Old 10-04-2019, 03:59 AM
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Originally Posted by Ralph3.
Finally pulled my old Alpine radio to start the installation of a Continental radio in my cab. With the radio out I had access to the area around the fog light switch and there was a unused plug in the wire bundle. Plugged in another switch for the rear fog lights turned the key on, turned on the front fog lights then the rear fog light switch and everything lights up. Opened up the blank between fog light switch and the lighter and installed the rear switch all done. Hardest part was getting the old radio out.
Can you please post a photo of the modified dash? Thanks. I've wanted to do this on my 90 964. Is the new rear fog light **** illuminated?.
Old 10-04-2019, 02:10 PM
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I-phone pictures, not the best but you get the idea. Drilled a hole in the dash for the switch, switch is illuminated, rear fogs only work if the front fog lights are on.


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