SKU: 5334108517

Diode Dynamics Add-on DT 4-Pin Foglight Wiring Harness

Sale price$71.95 Regular price$79.95
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Description

Diode Dynamics Add-on DT 4-Pin Foglight Wiring HarnessOverview. Add fog lights to your vehicle. If you want to add fog lights to your vehicle but you don't have factory wiring this is the solution you need! Unlike other basic harnesses on the market our Add On Fog Harness allows your fog lights to operate automatically just like you'd expect from the factory. By using an activation and deactivation wire along with a toggle switch this harness will turn your fog lights on automatically any time the

Overview. Add fog lights to your vehicle. If you want to add fog lights to your vehicle but you don't have factory wiring this is the solution you need! Unlike other basic harnesses on the market our Add-On Fog Harness allows your fog lights to operate automatically just like you'd expect from the factory. By using an activation and deactivation wire along with a toggle switch this harness will turn your fog lights on automatically any time the headlights are turned on and the switch is in the on position. This is much more convenient than manually flipping a switch on every time you want to use them!

This harness is intended to be used with Diode Dynamics Stage Series LED Pods with backlight functionality and can safely provide up to 10A of power.

Wiring. We recommend connecting the Activation Input Wire to your sidemarker or low beam signal so your fog lights can automatically turn on with your parking lights or low beams. Any time this activation signal is powered and the fog light switch is in the On state the fog lights will be turned on.

We recommend connecting the Deactivation Wire to your vehicle's high beam circuit. This will automatically disable the output any time your high beam is activated.

Finally we recommend connecting the Backlight Activation Wire to a fused 12V source to trigger the backlight feature such as the parking light or running light. Before wiring please check local laws and regulations for proper activation and deactivation of the type of lamp you are powering with this harness.

Auxiliary switch compatible. If your vehicle came with a factory-installed auxiliary switch bank you can use one of them as your fog light switch instead of the toggle switch that's included. Simply connect an Auxiliary Switch output to the harness using the included Power Input Wire.

Allows you to add fog lights to your vehicle with factory-like operation

Included Quantity: One (1)

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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
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SKU: 5334108517

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4.1 ★★★★★
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Mahera
Carnegie, US
★★★★★ 5
Perfect fit for our 2018 X5 35D
Perfect fit. Never replaced a filter in this car before and took me only 13 minutes. I timed it lol. That includes taking some before and after pictures from the old and new filter. What is worth mentioning is that the car was until now under the “fake maintenance” from BMW that comes with a new car and goes until 36.000 miles. Up to this mileage there is no other service the. The oil changes (3) due. The first real checkup is at a higher mileage and not covered anymore. Anyway , those filters where replaced before from a BMW dealership. When I compare the new filters and the filters I took out of the car they look the same. I was expecting to find some BMW marks on the installed filter but perhaps they don’t put their name in it anymore??? Or it could be they also put “after market” parts in. Anyway, BMW quoted me in all seriousness 700 dollar to replace those filters and the Inside filter The inside filter is on its way and is 25 dollar. Together with those filters the parts came to 55 dollar and I guess a total of 30 minute of work. Well done BMW, lol. We all need to make a living buy that should be considered “robbery” Anyway, if you thinking about replacing those filters then go for it. It’s not complicated and all you need is a screw driver to get one plastic river out that you can push back in once you are done. Those filters here from MANN are the real deal and fit perfectly and state that they are made in Germany. I have no reason not to believe it.
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Reviewed in the United States on April 28, 2020
M
Verified Purchase
Mikkitorrentino
Boise, US
★★★★★ 5
Excellent Product
It works really well. I used it on quarter tank and drove about 6 miles then filled up with top tier gas and my MPG went up by 3 miles on Highway and about 2 MPG city driving. At first there may be slight hesitation as it clears carbon. Then runs smooth as silk.
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Reviewed in the United States on May 10, 2026
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Verified Purchase
Goleta
Draper, US
★★★★★ 5
Quality product
Seeing as it passed the smog test without any issues, it seems this product worked exactly as intended.
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Reviewed in the United States on May 20, 2026
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Verified Purchase
Melodie G Cross
Carnegie, US
★★★★★ 5
So far so good
It seems to be working well, so far. The check engine light turned off and the my vehicle seems to be running well. Be sure to follow the instructions. A while back, I wasted some money on a different catalytic converter cleaner because I put the cleaner in on a full tank of gas. It's best to wait until you're at a half tank or less of gasoline before you put in your catalytic converter cleaner. Also, I drove around right after I put in the catalytic converter cleaner and before I filled up my tank again. A couple of days later, I went to the gas station and topped off my tank. Again, it seems to be running well for now.
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Reviewed in the United States on April 21, 2026
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Verified Purchase
ckanchola
Phoenix, US
★★★★★ 4
Works ok for some stuff.
I tried this mainly to clean my cats. It sadly didn't work for that at all. It did however work great as a basic fuel system cleaner. It smoothed out my idle and cleaned my O2 sensors they were a bit lazy before using this product now they switch fast like they are supposed too. In terms of my recommendation I say use as a fuel system cleaner. Or if your cats aren't too clogged in my case I bought an old neglected used car that likely had that problem for years. So I don't think any pour in tank cleaner would work in my case. However if your car just started having cat issues. This might work?? I think it's worth a try at least and isn't much more expensive than a basic fuel system cleaner so why not?
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Reviewed in the United States on May 16, 2026

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