Author Topic: Fog Light Sizing Help  (Read 462 times)

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Offline Big Brian

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Fog Light Sizing Help
« on: February 12, 2019, 05:49:22 pm »
Hello all,

I am looking at adding a set of driving/fog lights to my 2008 Connie.

Here is the set I am looking at;
 https://mattgeckoleds.com/shop?olsPage=products%2Fbaja-40w-led-off-road-light-available-in-small-and-large

My concern is that the charging system cannot sustain these lights.

They are listed as "40 watt" I have seen some other motorcycle-specific lights listed as 40 watt as well so I am assuming I am ok to run these?

Here are the other motorcycle-specific lights that state "4, 10 watt LED's"
 https://www.revzilla.com/motorcycle/denali-d4-20-led-light-pod-with-datadim-technology?gclid=Cj0KCQiA-onjBRDSARIsAEZXcKaw9W2KVswqy_pxEhK2tuqg8jcjhhg-xjY4V8UpHejSTGC-dcEwvvwaAt02EALw_wcB

Thanks!
1975 Honda Goldwing GL1000
1996 Honda Shadow ACE 1100
2001 Suzuki SV650N
2008 Kawasaki Concours ABS
2013 Ducati Monster 796 Anniversary Edition #35/200

Offline gilbysan

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Re: Fog Light Sizing Help
« Reply #1 on: March 01, 2019, 02:24:44 am »
Big Brian,
Those look pretty high draw to me.  You might check out the Denali's on Twisted Throttle to get a feel for average amp draw on them.  Also, I would be concerned that two 40 Watt LEDs would be just too bright for oncoming traffic and it might blind them which could be bad for you.  the Denali DMs I run are small and very bright but not so much to piss people off.  They are truly conspicuity lights.  The other Denali models have a different lens size and some project a narrow driving beam out 500 ft or more.  I am thinking that i might update my DM to the DR1 2d gen which has what Denali calls "Data Dim", marketecture for two levels of illumination.
I think the DMs draw just a couple of amps each...
Hope this helps!
Cheers!
Gilbysan


gilbysan

“In theory there is no difference between theory and practice. In practice there is.” – Yogi Berra

Offline Steiny

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Re: Fog Light Sizing Help
« Reply #2 on: March 01, 2019, 11:35:45 pm »
I have a set of these .   been there for 7 years - no problems and work well

 Get the LED dimmer to control them.

 

 http://stores.advmonster.com/model-30-led-off-road-spot-light/

Offline PeterL

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Re: Fog Light Sizing Help
« Reply #3 on: March 10, 2019, 11:55:26 pm »
On my C14, I swapped out the halogen H4 headlight bulbs for some silly-bright LED units that use WAY less power, thus freeing up a lot of capacity. I now have both HeatDemons grip heaters and LED driving lights that are not all that easy to discern from a small supernova. Plus my brake strobe, hardwired USB outlets, and various other bits and pieces. (Yes, I'm just a bit obsessive, Why?) Thus far, I've had no problem running everything simultaneously. I suppose I could wire in an ammeter, if I could find a space to put it...

And yes, I do get blinked at by oncoming traffic on occasion (I do try to switch them off when the occasional car appears). I also live an hour from anywhere at the end of dark, twisty 2-lane roads. I feel a lot safer being able to CLEARLY illuminate my path. Gravel, trees, deer, kamikaze squirrels- you just never know what to expect around the next corner.

Ride safe.
Mine all mine: 2008 C14 ABS (aka "Thunder")
projects: 1982 cb750F (project "Ichigo"), 1983 VF750S (x2) (I named the first one "SabreOne" just so's I could name the second one "SabreTwo-th")
just gifted: 2003 BMW K1200RS, 2018 Multistrada 950, 2019 Yamaha Tracer GT (Nice. But I'd still rather have my friend than his bikes, y'know?)

Offline Big Brian

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Re: Fog Light Sizing Help
« Reply #4 on: March 13, 2019, 12:24:13 am »
Big Brian,
Those look pretty high draw to me.  You might check out the Denali's on Twisted Throttle to get a feel for average amp draw on them.  Also, I would be concerned that two 40 Watt LEDs would be just too bright for oncoming traffic and it might blind them which could be bad for you.  the Denali DMs I run are small and very bright but not so much to piss people off.  They are truly conspicuity lights.  The other Denali models have a different lens size and some project a narrow driving beam out 500 ft or more.  I am thinking that i might update my DM to the DR1 2d gen which has what Denali calls "Data Dim", marketecture for two levels of illumination.
I think the DMs draw just a couple of amps each...
Hope this helps!
Cheers!
Gilbysan

I appreciate the advice!

If you do the math. Amps = watts ÷ volts

Therefore, at 12v the lights will be drawing 6.6 amps or so together. That should be well within the aux circuit on the bike.

I plan on having the lights on a switch so I don't have to worry about unnecessarily blinding drivers.
1975 Honda Goldwing GL1000
1996 Honda Shadow ACE 1100
2001 Suzuki SV650N
2008 Kawasaki Concours ABS
2013 Ducati Monster 796 Anniversary Edition #35/200

Offline Big Brian

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Re: Fog Light Sizing Help
« Reply #5 on: March 13, 2019, 12:25:12 am »
I have a set of these .   been there for 7 years - no problems and work well

 Get the LED dimmer to control them.

 

 http://stores.advmonster.com/model-30-led-off-road-spot-light/


Those actually look really nice!
1975 Honda Goldwing GL1000
1996 Honda Shadow ACE 1100
2001 Suzuki SV650N
2008 Kawasaki Concours ABS
2013 Ducati Monster 796 Anniversary Edition #35/200

Offline BiggusDekkus

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Re: Fog Light Sizing Help
« Reply #6 on: March 16, 2019, 03:19:19 pm »
The 40W each light seems excessively bright.  I installed two 10 watt lights, these seem about perfect to me.  No need to spend big bucks, these are sturdy and I have had no issues in the one year I've had these on the bike.  Make sure you get the SPOT, not the FLOOD.  https://www.amazon.com/gp/product/B01MDJK1AJ/ref=oh_aui_search_asin_title?ie=UTF8&psc=1
2016 Gray C14
previous bikes 2006 C10, 1977 Z1000
Jet Ski Ultra 300X & ST-15F
Lake Stevens, WA

Online Daboo

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Re: Fog Light Sizing Help
« Reply #7 on: March 16, 2019, 04:18:19 pm »
Another alternative is to look at ADVMonster for their lights.  I've used them on two previous bikes and if my Clearwater lights the original owner installed ever die, that's what I'll go with.

FWIW, I did a comparison in a dark parking lot with another rider once after a Twisted Throttle rep on a forum said the Denali lights had better light even though the lumens were far less.  The $30 light I was using was far brighter than the several hundred dollar Denali light was.  But as a conspicuity light, those work well.

Just a thought when considering this much light output...  When you've turned night into day by turning them on...how long will your eyes take to adjust when you turn them off?  You'll make everything far blacker for awhile when they are turned off till your eyes can readjust.

Chris
IBA# 49894 True Rounder = 0-20's - Rounder -- to -- 100's+ Red Hot Rounder

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