B-Raz Posted June 5, 2014 Share Posted June 5, 2014 I did this mod on my 2014. I know 2013 is the same. Other than that I am not sure. This mod will allow you to turn your fog lights on whenever you want not just when the low beams are on. This does work with the key out so don't forget to turn them off. tools needed Phillips screwdriver pliers wire terminal crimpers heat source to heat shrink parts needed 2 red t-taps (must be red, blues will not work) 2 red male spade terminals with heat shrink 1 1n4001 diode http://i808.photobucket.com/albums/zz6/B-raz/20140603_115637.jpg First step is to assemble the diode. Put a spade terminal at each end of the diode so that the heat shrink will cover all the exposed wire on it. Crimp and heat shrink them. You should end up with this http://i808.photobucket.com/albums/zz6/B-raz/20140603_120519.jpg Next under the drivers side dash there is a kick panel that needs to be removed. First step to that is to take 3 clips that are circled out. http://i808.photobucket.com/albums/zz6/B-raz/60ed23af-0058-40e5-b689-1505cd605d2a.jpg Next you need to unsnap the OBD2 port. Just squeeze the ends and it should come out. http://i808.photobucket.com/albums/zz6/B-raz/20140531_110212.jpg You should be able to move that panel out of the way now. Next to the steering column you should see the body control module. the 2 connectors closest to the firewall are the 2 that you want http://i808.photobucket.com/albums/zz6/B-raz/3eab4eb2-4b61-4c79-9f64-af48c3ff31b9.jpg The red arrowed connector should have a Violet/Yellow wire and the blue connector should have an all white wire that you want to attach the t-taps to. http://i808.photobucket.com/albums/zz6/B-raz/20140603_133216.jpg Now you just have to attach the diode to the 2 t-taps. Make sure the white stripe on the diode is toward the white wire. http://i808.photobucket.com/albums/zz6/B-raz/20140603_134027.jpg That's it. Now put your OBD2 port back in the kick panel and reinstall the kick panel. Here is the end result http://i808.photobucket.com/albums/zz6/B-raz/6a9dee9b-4ec1-48d5-aa01-03ba10f02977.jpg http://i808.photobucket.com/albums/zz6/B-raz/f44bd6d5-1ef9-4b4f-9305-689c57c092da.jpg http://i808.photobucket.com/albums/zz6/B-raz/3a8204c7-9222-4c3e-9a16-f4c15e7f961b.jpg Link to comment Share on other sites More sharing options...
White Knight Posted June 7, 2014 Share Posted June 7, 2014 I just looked under my dash and I got the same wires in my 2011 GT. So I'm going to get the parts and try it too Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
B-Raz Posted June 14, 2014 Author Share Posted June 14, 2014 Edited original post because this does work with the key off. Link to comment Share on other sites More sharing options...
BigBopper Posted June 15, 2014 Share Posted June 15, 2014 I tried the mod on my '10 LGT as described. When I connected the negative terminal on the battery, the fog lights came on, but I couldn't get them to turn off. Fog light switch on the dash had no effect. Key was off. Had to remove the diode ... back to square one. Link to comment Share on other sites More sharing options...
B-Raz Posted June 15, 2014 Author Share Posted June 15, 2014 I discovered this by studying the wiring diagram from a 2013. If I had a diagram for a 2010 I could check that. Link to comment Share on other sites More sharing options...
BigBopper Posted June 16, 2014 Share Posted June 16, 2014 Do you control your fog lights from the turn signal stalk? My fog light switch is on the dash panel, beside the knob that adjusts the L/R rear view door mirrors. Not sure if the switch type/location is determined by factory installed vs. port installed fog lights. Link to comment Share on other sites More sharing options...
B-Raz Posted June 16, 2014 Author Share Posted June 16, 2014 Turn Signal stalk Link to comment Share on other sites More sharing options...
B-Raz Posted July 6, 2014 Author Share Posted July 6, 2014 looking at the wiring of a 2010 it was exactly the same. Biggest thing is to make sure you put the diode in the correct direction. Link to comment Share on other sites More sharing options...
orndog Posted July 7, 2014 Share Posted July 7, 2014 I tried the mod on my '10 LGT as described. When I connected the negative terminal on the battery, the fog lights came on, but I couldn't get them to turn off. Fog light switch on the dash had no effect. Key was off. Had to remove the diode ... back to square one. Was excited, then you go and ruin it for me Oh well, us dash button people will have to keep trying. Link to comment Share on other sites More sharing options...
B-Raz Posted July 7, 2014 Author Share Posted July 7, 2014 If you can find a wiring diagram for that style I could figure it out as well. Link to comment Share on other sites More sharing options...
BigBopper Posted July 7, 2014 Share Posted July 7, 2014 looking at the wiring of a 2010 it was exactly the same. Biggest thing is to make sure you put the diode in the correct direction. Diode was put in correct direction. The diagram you looked at referred to the turn signal (combination switch) light control switch. Haven't been able to located a diagram for the dash mounted fog switch. I think the dash mounted fog light switch may have a different colored wire than the white wire illustrated in the diagram you saw. Link to comment Share on other sites More sharing options...
nstg8r Posted August 18, 2014 Share Posted August 18, 2014 For those with the fog light switch a part of the mirror control and not on the turn signal stalk, the wire appears to be Green w/Red stripe. No idea where it connects to, though. Link to comment Share on other sites More sharing options...
nstg8r Posted August 24, 2014 Share Posted August 24, 2014 Was excited, then you go and ruin it for me Oh well, us dash button people will have to keep trying. http://legacygt.com/forums/showpost.php?p=4907187&postcount=87 Link to comment Share on other sites More sharing options...
Stu baru Posted November 28, 2014 Share Posted November 28, 2014 Finally, the mod I've been looking for. Hopefully the wiring is consistent from the '14 to '15 MYs. One question, is there no power source in that bundle to tap that isn't always powered even when the engine's off? Link to comment Share on other sites More sharing options...
Bryank930 Posted November 30, 2016 Share Posted November 30, 2016 I know this thread is ancient, but I just thought of something. Bear with me, this is just a brain dump lol. I'm pretty sure the fogs are ground-switched, so that rules out running switched +12v through the diode to the white wire. What if I put a relay between the YV wire and diode and use switched +12v from the fuse box to trigger the relay? This is the pinout I'm looking at... http://jdmfsm.info/Auto/Japan/Subaru/Legacy%20Outback/2014/USDM%20Legacy%20FSM%202014%20(BM-BR)/7%20WIRING%20SYSTEM%20SECTION/21%20Front%20Fog%20Light%20System.pdf Link to comment Share on other sites More sharing options...
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