How to Access Side Marker Wiring for Fog Lights? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Ammunition · 11-03-2014, 09:16 PM

Does anyone know how to access the side marker wiring from the engine bay?

I'd like to wire my Diode Dynamics fog light kit to turn on whenever the side markers are on, instead of having them wired to the headlights, but I'm not sure how to identify the wiring to it from the engine bay.

I'd prefer to do this without removing the side markers as my clear ones were a huge PITA to install, and getting them to sit correctly.

Has anyone done this that can offer some insight, or is there a DIY that I'm missing?

NyC Zn6 · 11-04-2014, 02:37 AM

Well I tapped into the passenger side marker with my kit. What I did was turned the wheel counter clockwise so I would be able to have access to the fender lining. If you look closely there should be a plastic tab holding the fender lining to the fender. It should be right next to the side marker. Pop the clips out and pull the lining downward to expose the wiring of the side marker. Iirc the white wire is POS, and the black is NEG. Just tap the harness supplied by Diode Dynamics to those wires and you should be set. Hope it helps you and good luck.

torranosaurus · 01-19-2015, 11:12 AM

You wouldn't need a relay if you did this?
Just the fogs wired to each other and then the negative and positive to the marker light wires?

aznatama · 01-19-2015, 11:57 AM

Side marker should only be used for signal to the relay and fogs should be tapped to battery due to current draw. Unless you want to blow marker light fuses, which includes rear tails. It's all running on a single 10a fuse.

torranosaurus · 01-19-2015, 01:57 PM

I have seen fogs tapped into the low beam wires as well. That would seem pretty simple if it would work.

1GiantTurtle · 01-20-2015, 02:51 AM

connect them to the factory [IMG]

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11-03-2014, 09:16 PM	#1
Ammunition Senior Member Join Date: Apr 2013 Drives: 2014 Scion FR-S Location: NW - PDX Posts: 808 Thanks: 853 Thanked 380 Times in 234 Posts Mentioned: 35 Post(s) Tagged: 4 Thread(s)	How to Access Side Marker Wiring for Fog Lights? Does anyone know how to access the side marker wiring from the engine bay? I'd like to wire my Diode Dynamics fog light kit to turn on whenever the side markers are on, instead of having them wired to the headlights, but I'm not sure how to identify the wiring to it from the engine bay. I'd prefer to do this without removing the side markers as my clear ones were a huge PITA to install, and getting them to sit correctly. Has anyone done this that can offer some insight, or is there a DIY that I'm missing?

01-19-2015, 11:57 AM	#4
aznatama Senior Member Join Date: May 2014 Drives: 2014 BRZ MT (Sold); 2006 V70R Location: Fairfax Posts: 873 Thanks: 10 Thanked 186 Times in 150 Posts Mentioned: 8 Post(s) Tagged: 0 Thread(s)	Side marker should only be used for signal to the relay and fogs should be tapped to battery due to current draw. Unless you want to blow marker light fuses, which includes rear tails. It's all running on a single 10a fuse. __________________ '14 BRZ LTD MT DGM

01-20-2015, 02:51 AM	#6
1GiantTurtle Space for Rent Join Date: Apr 2014 Drives: 2014 6MT ToyoBaru86ScionMonogram? Location: Pacific Ocean/SoCal Posts: 1,054 Thanks: 1,000 Thanked 1,136 Times in 526 Posts Mentioned: 31 Post(s) Tagged: 1 Thread(s)	connect them to the factory [IMG][/IMG] [IMG][/IMG] [IMG][/IMG] __________________ ToyoBaruScionGT86hachiRokuBRZMonogram Instagram: 86turtle Instagram: 86turtle

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11-04-2014, 02:37 AM	#2
NyC Zn6 Senior Member Join Date: Apr 2013 Drives: 10 Series #974 6m/t Location: NYC Posts: 1,956 Thanks: 1,358 Thanked 1,141 Times in 669 Posts Mentioned: 6 Post(s) Tagged: 2 Thread(s)	Well I tapped into the passenger side marker with my kit. What I did was turned the wheel counter clockwise so I would be able to have access to the fender lining. If you look closely there should be a plastic tab holding the fender lining to the fender. It should be right next to the side marker. Pop the clips out and pull the lining downward to expose the wiring of the side marker. Iirc the white wire is POS, and the black is NEG. Just tap the harness supplied by Diode Dynamics to those wires and you should be set. Hope it helps you and good luck.

01-19-2015, 11:12 AM	#3
torranosaurus Member Join Date: Jul 2014 Drives: 2014 FR-S Location: Michigan Posts: 32 Thanks: 1 Thanked 5 Times in 4 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	You wouldn't need a relay if you did this? Just the fogs wired to each other and then the negative and positive to the marker light wires?

01-19-2015, 01:57 PM	#5
torranosaurus Member Join Date: Jul 2014 Drives: 2014 FR-S Location: Michigan Posts: 32 Thanks: 1 Thanked 5 Times in 4 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I have seen fogs tapped into the low beam wires as well. That would seem pretty simple if it would work.

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