DIY: of complete FOG LAMP install

jpit · 11-02-2009, 09:29 PM

Thanks for your help. I found the orange and black wires from the fog light and decided to put in a switch to control the light instead.

bigaudiofanat · 11-03-2009, 02:49 PM

This should be a good project can not wait to do it for a buddy of mine.

jikhead · 11-14-2009, 06:34 PM

I just finished wiring up the relay to get the flasher to work. I will post up some pics and wiring diagrams for the relay.

simota1 · 11-14-2009, 07:48 PM

nice bro

jikhead · 11-15-2009, 01:23 AM

OK, so wiring it this way is for the foglight to only come on (and flash) while in reverse.

If your Z has the wiring harness plug for the fog light, you can utilize that plug and tap into the wiring further up in the hatch. Locate the firewall grommet that would be somewhat directly behind the hatch light. Since there is no power to the wiring harness, you'll need to tap into the larger black(-) and orange(+) wires in the wiring bundle here. Pick a tail lamp to tap into; the grounding point for all the wires back here is on the drivers side. (There is a post further up showing the wiring scheme for the wires to/from the tail lamp.) In this case only, you only need to tap into the orange (reverse light) wire. NOTE: You may notice in my pics that I've spliced and repaired the red wire. This is only because I was doing some testing with the tail lamp and whether I wanted the fog light always on with the tail lamps. I've decided against it for now, and will wire up a manual switch at a later date.

So now to the wiring harness and flasher. Wire up accordingly:
85 - wire together w/30 to orange wire of tail lamp.
86 - Ground; send wire to the grounding point.
87a - need to wire to positive of fog lamp (the orange wire 1st mentioned in the 1st few pics); also needs to wire up to X of flasher.
87 - wire to L of flasher
30 - wire together w/85 to orange wire of tail lamp.

Flasher
X - need to wire to positive of fog lamp (the orange wire 1st mentioned in the 1st few pics); also needs to wire up to 87a of relay.
L - wire to 87 of relay

Fog Light Tapped Wires
Large Orange Wire - wire to X of flasher and 87a of relay
Large Black Wire - Wire to grounding point

farmosh203 · 11-22-2009, 12:21 PM

Thanks for the writeup, I installed my fog light pretty easily yesterday. I didn't understand what you guys were talking about with the Loctite, but after attempting to unscrew the original fog light, I immediately understood what you guys were talking about. I ended up using an electric drill to unscrew the bolt, which melted the plastic, freeing the screw.

I was thinking of maybe adding a microcontroller later to do some pulse width modulation or blinking. I think if I come up with a cool idea, I'll build my own PCB and start the software process

By the way, is there any reason you guys are using Relays (moving parts, has a limited life) to control the blinking of the light? Why not use a transistor?

CBRich · 01-30-2010, 09:12 AM

For those of you wondering about the wiring I posted a DIY specifically for it. It's set up to have a full off switch killing all light, a full on switch to manually light the fog, and a second on position to allow solid light with brakes and blinking with reverse.

DIY: Rear Fog Light - Flashing Reverse - Solid Brake - Full Override

Simota1, hope you don't mind me branching this off as my DIY is specifically for a certain wiring type and I didn't want to clutter the thread.

simota1 · 01-30-2010, 04:03 PM

dont worry about it bro!!! i dont mind at all

yubman · 02-09-2010, 05:31 PM

Thanks Mr Z for the clairification, good point about the ground and power draw of the fog light. I should probabbly convert the bulb to LED which should also last longer and draw less power.

I think I know what kind of cable taps your refereing to, I'll stop by and pick some up from home depot once the weather breaks and hopefully get the fog installed.

Thanks again for the info.

Mr_Z · 02-10-2010, 04:50 PM

Be careful with the LED setup! I have tried 5 different LED and none gave me a good result (after spending over 100$!!)

- One didn’t even fit in the socket hole!
- 2 other one did not give me nice results when it comes to inside illumination… Remember that the bulb hole is not centered… So it was designed for a single source of light… in the center. Not 12 different LED’s!
- Since I have a special socket with dual wire (normal and braking condition), the other LED’s I tried did not behave as they should when I stepped on the brakes… (To be honest I still don’t understand why but must have something to do with the inside wiring…

)

In the end, I just gave up and kept the regular bulb!!

Also FYI, I confirm that a regular bulb wired in one of the tail lights, does not dim the tail light compared to the other.

Quote:

Originally Posted by yubman

Thanks Mr Z for the clairification, good point about the ground and power draw of the fog light. I should probabbly convert the bulb to LED which should also last longer and draw less power.

I think I know what kind of cable taps your refereing to, I'll stop by and pick some up from home depot once the weather breaks and hopefully get the fog installed.

Thanks again for the info.

jason821 · 03-05-2010, 09:54 AM

I have a question...I looked under my car and saw that there is a grey plug right next to where the fog lamp would go. Does anyone know why that plug is there? Did they put it there for 2010 so it wouldnt be a pain in the *** to install a rear fog?

simota1 · 03-05-2010, 03:18 PM

wow dood i have no idea i wonder where that wire goes... mine had a dummy plug only

Hugoneus · 03-05-2010, 03:54 PM

Quote:

Originally Posted by jason821

I have a question...I looked under my car and saw that there is a grey plug right next to where the fog lamp would go. Does anyone know why that plug is there? Did they put it there for 2010 so it wouldnt be a pain in the *** to install a rear fog?

I would really like to find out what that is for! I have the 2010 model too and I am going to install the lamp soon!

caneman88 · 03-05-2010, 10:17 PM

It ends up behind the passenger side kick I cut the wire then added a power source switched to the orange wire added a switch under my dash and the fog works perfect.

ProfessorDave · 11-29-2010, 09:16 AM

Quote:

Originally Posted by caneman88

It ends up behind the passenger side kick I cut the wire then added a power source switched to the orange wire added a switch under my dash and the fog works perfect.

Does the p-side kick just pull off? Oh, and are we talking about the soft pad that is on the center console, or the plastic cover near the passenger door/footwell? I haven't tried it yet, but plan on using the existing harness much in the same way you did.

Also, another post said the ground wire in that harness is "functional". Does that mean it is actually grounded someplace? The reason I ask is that I want to run two hot leads to the EVO-R fog light I'm getting, since it has two functions (one for blinking, one for solid). I'd like to use the "ground" wire in that harness for power if possible. The light has a ground (which I will connect to the grounding point in the trunk), and will ground the switch elsewhere.

Thanks!

11-03-2009, 02:49 PM	#2 (permalink)
bigaudiofanat Car Audio Installer Join Date: Jun 2009 Location: Magnolia DE Posts: 8,342 Drives: 2012 Infiniti G37x Rep Power: 854	This should be a good project can not wait to do it for a buddy of mine. __________________ Need help with car audio or electronics? Let me know!! Need Help Let Me Know Direct email address reimermatt@gmail.com Owner of: Dynamic Mobile Audio Follow me below https://www.facebook.com/Dynamicmobileaudio/

11-14-2009, 07:48 PM	#4 (permalink)
simota1 A True Z Fanatic Join Date: May 2009 Location: Dededo, Guam Posts: 6,642 Drives: solid red 370z 6mt Rep Power: 407	nice bro __________________ *TOP SECRET/POWERHOUSE AMUSE/ARC/DAYTONA RACING/VARIS/MINES/GANADOR/J-LINE/WORK EMOTION CR KAI/GT SPEC/CARBON SIGNAL/ZOOM ENGINEERING/ CARBON FIBER ELEMENT/STILLEN/*

01-30-2010, 09:12 AM	#7 (permalink)
CBRich A True Z Fanatic Join Date: Apr 2009 Location: SC Posts: 2,464 Drives: 370Z Rep Power: 546	For those of you wondering about the wiring I posted a DIY specifically for it. It's set up to have a full off switch killing all light, a full on switch to manually light the fog, and a second on position to allow solid light with brakes and blinking with reverse. DIY: Rear Fog Light - Flashing Reverse - Solid Brake - Full Override Simota1, hope you don't mind me branching this off as my DIY is specifically for a certain wiring type and I didn't want to clutter the thread. Last edited by CBRich; 01-30-2010 at 09:20 AM.

01-30-2010, 04:03 PM	#8 (permalink)
simota1 A True Z Fanatic Join Date: May 2009 Location: Dededo, Guam Posts: 6,642 Drives: solid red 370z 6mt Rep Power: 407	dont worry about it bro!!! i dont mind at all __________________ *TOP SECRET/POWERHOUSE AMUSE/ARC/DAYTONA RACING/VARIS/MINES/GANADOR/J-LINE/WORK EMOTION CR KAI/GT SPEC/CARBON SIGNAL/ZOOM ENGINEERING/ CARBON FIBER ELEMENT/STILLEN/*

03-05-2010, 03:18 PM	#12 (permalink)
simota1 A True Z Fanatic Join Date: May 2009 Location: Dededo, Guam Posts: 6,642 Drives: solid red 370z 6mt Rep Power: 407	wow dood i have no idea i wonder where that wire goes... mine had a dummy plug only __________________ *TOP SECRET/POWERHOUSE AMUSE/ARC/DAYTONA RACING/VARIS/MINES/GANADOR/J-LINE/WORK EMOTION CR KAI/GT SPEC/CARBON SIGNAL/ZOOM ENGINEERING/ CARBON FIBER ELEMENT/STILLEN/*

11-02-2009, 09:29 PM	#1 (permalink)
jpit Enthusiast Member Join Date: Feb 2009 Location: Washington State Posts: 440 Drives: 370Z Tour MT w/Spt Rep Power: 18	Thanks for your help. I found the orange and black wires from the fog light and decided to put in a switch to control the light instead.

11-14-2009, 06:34 PM	#3 (permalink)
jikhead Enthusiast Member Join Date: Jun 2009 Location: Little Rock, AR Posts: 425 Drives: 09 370Z Blue 6spd Rep Power: 185	I just finished wiring up the relay to get the flasher to work. I will post up some pics and wiring diagrams for the relay.

11-22-2009, 12:21 PM	#6 (permalink)
farmosh203 Base Member Join Date: Nov 2009 Location: Arizona Posts: 24 Drives: 09 Nissan 370Z sport Rep Power: 17	Thanks for the writeup, I installed my fog light pretty easily yesterday. I didn't understand what you guys were talking about with the Loctite, but after attempting to unscrew the original fog light, I immediately understood what you guys were talking about. I ended up using an electric drill to unscrew the bolt, which melted the plastic, freeing the screw. I was thinking of maybe adding a microcontroller later to do some pulse width modulation or blinking. I think if I come up with a cool idea, I'll build my own PCB and start the software process By the way, is there any reason you guys are using Relays (moving parts, has a limited life) to control the blinking of the light? Why not use a transistor?

02-09-2010, 05:31 PM	#9 (permalink)
yubman Base Member Join Date: Nov 2009 Location: usa Posts: 47 Drives: 2009 370Z Touring Rep Power: 17	Thanks Mr Z for the clairification, good point about the ground and power draw of the fog light. I should probabbly convert the bulb to LED which should also last longer and draw less power. I think I know what kind of cable taps your refereing to, I'll stop by and pick some up from home depot once the weather breaks and hopefully get the fog installed. Thanks again for the info.

03-05-2010, 09:54 AM	#11 (permalink)
jason821 Base Member Join Date: Feb 2010 Location: Orlando, FL Posts: 13 Drives: 2010 370z PW M6 Rep Power: 17	I have a question...I looked under my car and saw that there is a grey plug right next to where the fog lamp would go. Does anyone know why that plug is there? Did they put it there for 2010 so it wouldnt be a pain in the *** to install a rear fog?

03-05-2010, 10:17 PM	#14 (permalink)
caneman88 Base Member Join Date: Mar 2009 Location: San Antonio TX Posts: 225 Drives: PG 370Z,M-35,F150 Rep Power: 18	It ends up behind the passenger side kick I cut the wire then added a power source switched to the orange wire added a switch under my dash and the fog works perfect. __________________ GO CANES \|\|Stillen CB Exhaust \|\|Berk HFC \|\|Stillen G3 Intake\|\|UpRev Tuned\|\|S-Tune Front Spoiler\|\|Setrab 19 Oil Cooler\|\|

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