DIY: Rear Fog Light Wire Via BCM and Stock Wiring

ga0887 · 08-26-2012, 11:04 AM

Bump, anyone?

Jimc · 05-25-2013, 05:23 PM

Curious as to why you are adding a diode to the input at the BCM. Great write up by the way. Very complete.

spearfish25 · 06-07-2013, 08:27 PM

Quote:

Originally Posted by Jimc

Curious as to why you are adding a diode to the input at the BCM. Great write up by the way. Very complete.

It's been so long I can't remember. I think the original Nissan wiring schematics all use diodes. I think ChrisSlicks confirmed I needed it at the time.

Taylortoons · 08-28-2013, 09:34 AM

I ordered and installed the rocker switch from the Zstore. I powered the switch using the yellow wire for the accessory socket located in the armrest.

Instead of using the pigtail that came with the kit, I ran the red power wire from the switch to the BCM and spliced into the orange power wire. Bingo, the light works!

Problem is, the light always works as long as the car is started. Probably because I am only using the red power wire coming off the switch and not using the black ground wire.

Question: Is the ground wire for the light also located at the BCM along with the orange power wire?

Taylortoons · 09-16-2013, 07:37 AM

After many hours studying the wiring diagram, I determined the best approach was to go ahead and wire the rocker switch directly into the rear fog light.

The factory ground wire for the light terminates in the rear bumper area, so I was destined to take apart the rear hatch anyway just to gain access to the wire.

Turns out wiring the switch to the light was a simple install and only took a couple of hours. I threaded the wires from the fog light through the drain plug located under the spare and into the console.

Now the rocker switch works as advertised and looks like a factory install. Total cost for fog light and switch was just over $300. Well worth it!

05-25-2013, 05:23 PM	#2 (permalink)
Jimc Base Member Join Date: May 2013 Location: New Jersey Age: 75 Posts: 97 Drives: 12 Vert Tour BS M6 Rep Power: 12	Why the diode to the BCM? Curious as to why you are adding a diode to the input at the BCM. Great write up by the way. Very complete.

08-28-2013, 09:34 AM	#4 (permalink)
Taylortoons Base Member Join Date: Aug 2013 Location: Dallas Posts: 98 Drives: 11 370Z AT PW Rep Power: 12	I ordered and installed the rocker switch from the Zstore. I powered the switch using the yellow wire for the accessory socket located in the armrest. Instead of using the pigtail that came with the kit, I ran the red power wire from the switch to the BCM and spliced into the orange power wire. Bingo, the light works! Problem is, the light always works as long as the car is started. Probably because I am only using the red power wire coming off the switch and not using the black ground wire. Question: Is the ground wire for the light also located at the BCM along with the orange power wire? Last edited by Taylortoons; 08-29-2013 at 12:53 PM.

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08-26-2012, 11:04 AM	#1 (permalink)
ga0887 Base Member Join Date: May 2011 Location: Miami, FL Posts: 104 Drives: 2011 370Z KAD 6MT Rep Power: 14	Bump, anyone?

09-16-2013, 07:37 AM	#5 (permalink)
Taylortoons Base Member Join Date: Aug 2013 Location: Dallas Posts: 98 Drives: 11 370Z AT PW Rep Power: 12	After many hours studying the wiring diagram, I determined the best approach was to go ahead and wire the rocker switch directly into the rear fog light. The factory ground wire for the light terminates in the rear bumper area, so I was destined to take apart the rear hatch anyway just to gain access to the wire. Turns out wiring the switch to the light was a simple install and only took a couple of hours. I threaded the wires from the fog light through the drain plug located under the spare and into the console. Now the rocker switch works as advertised and looks like a factory install. Total cost for fog light and switch was just over $300. Well worth it!