CamaroEric
Active Member
People are always looking for ways to wire fog lights so that they're off with the ignition. This wiring applies to the NC and just about any other bike with an H4. It can be modified for just about anything. I have no idea how the wiring looks on the newer bikes with the LED headlight since I did this on my 2012 NC (and some other bikes).
In short, I am running my LED fog lights directly from the power (in parallel) going to my headlight. I tapped off an H4 extension and sent the power to a 3 position SPDT switch (ON-OFF-ON) on the handlebar which offers 3 options:
1) Aux lights on when LOW beam is on.
2) Aux lights OFF.
3) Aux lights on when HIGH beam is on.
The 'ON' positions are tapped to the High and Low beam wiring separately with the center (which is typically the 'power in') actually supplying power to the aux lights.
Now there may be concerns with power - so verify this depending on your aux lights!
So let's just say you're running a standard 55/65 watt H4. At 65 watts when the bike is off (11.5V) the max draw is 5.65A. With a 10A fuse as stock, you have 4.35A remaining *technically* allowing another 50W on the circuit. I wouldn't do it, but my lights are only 15W, mostly so people see me coming, but I do get some ditch lighting out of them. That's another 1.3A, and I am totally fine running 6.95A (drops to 5.7A at 14V) on the stock wiring through the stock 10A fuse.
If you have bigger lights drawing more wattage, you'll need to send the output to a relay with appropriately sized wiring. A quick check shows that some Harbor Freight LEDs are claiming 95 watts! 8.26A at 11.5V! This will definitely need separate fused battery power. Relay wiring is all over the internet and there are a few ways to skin that cat.
So here are some pics of the wiring and components. Keep in mind these wire colors are PROBABLY NOT correct. I'm winging this from memory.
I will also add the disclaimer that this is for information only and I am not responsible for any wiring experimentation you do with your bike or other vehicle!
Thanks for reading...
In short, I am running my LED fog lights directly from the power (in parallel) going to my headlight. I tapped off an H4 extension and sent the power to a 3 position SPDT switch (ON-OFF-ON) on the handlebar which offers 3 options:
1) Aux lights on when LOW beam is on.
2) Aux lights OFF.
3) Aux lights on when HIGH beam is on.
The 'ON' positions are tapped to the High and Low beam wiring separately with the center (which is typically the 'power in') actually supplying power to the aux lights.
Now there may be concerns with power - so verify this depending on your aux lights!
So let's just say you're running a standard 55/65 watt H4. At 65 watts when the bike is off (11.5V) the max draw is 5.65A. With a 10A fuse as stock, you have 4.35A remaining *technically* allowing another 50W on the circuit. I wouldn't do it, but my lights are only 15W, mostly so people see me coming, but I do get some ditch lighting out of them. That's another 1.3A, and I am totally fine running 6.95A (drops to 5.7A at 14V) on the stock wiring through the stock 10A fuse.
If you have bigger lights drawing more wattage, you'll need to send the output to a relay with appropriately sized wiring. A quick check shows that some Harbor Freight LEDs are claiming 95 watts! 8.26A at 11.5V! This will definitely need separate fused battery power. Relay wiring is all over the internet and there are a few ways to skin that cat.
So here are some pics of the wiring and components. Keep in mind these wire colors are PROBABLY NOT correct. I'm winging this from memory.
I will also add the disclaimer that this is for information only and I am not responsible for any wiring experimentation you do with your bike or other vehicle!
Thanks for reading...