How many watts do you gain going LED's? - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 19 (permalink) Old 05-16-2007, 04:43 PM Thread Starter
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How many watts do you gain going LED's?

Since I'm sure someone here has done this, and has already done the math, what do you gain? Enough to add a twin 35w light bar? Just curious. Looking for better night visability.

Fergy
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post #2 of 19 (permalink) Old 05-16-2007, 10:24 PM
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According to my old manual the bulbs are rated at tail/brake 8/27 wx2. This basically means lights on =16 watts normal running and another 27 watts when the brakelight is on. Assume with loading resistors possibly a 5 watt total load. Savings on load could be as much as 45 watts. The load of the LED can vary depending on type and number of leds. Overall I would think the retrofit to led lighting would be a good start. I also can't find my turn signal light wattage in the book but on my bike the front lights are on as running lights and draw additional current. Guessing these are also 4-6 w each. This iis just a coarse estimate.

Rckmtn
Dennis Huff
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05 VN 750
KURYAKYN grips, helmet locks, and highway pegs
Spitfire windshield
Saddleman saddlebags/sissybar bag
Highwayman gelseat with Protac backrest
self canx turnsignals
Diamondstar headlight modulator
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post #3 of 19 (permalink) Old 05-16-2007, 10:30 PM
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Have you tried some of the new bulbs discussed in previous forums? The same wattage higher color spectrum bulbs seem to make a difference in visibility.

Rckmtn
Dennis Huff
Cheyenne, Wy.
05 VN 750
KURYAKYN grips, helmet locks, and highway pegs
Spitfire windshield
Saddleman saddlebags/sissybar bag
Highwayman gelseat with Protac backrest
self canx turnsignals
Diamondstar headlight modulator
Jardine 2 into 2
MCC turn signal relocator and floorboards
Luggage rack
Extended passenger backrest
KURYAKYN LED voltmeter
Custom tank bra with analog clock
Snider paint protector on tank side
130 DB horns
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post #4 of 19 (permalink) Old 05-17-2007, 03:31 AM
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rckmtn-- That would be 54 watts when the brake light is on.
Also the bulbs in the frnt trn signls is the same as the tail light/brake light bulbs-- 8W/27W. The rear trn signl bulbs are 27 watts also.
You are running 16W up front and back (tail light) continously (32 watts) then add another 54 watts when you are signaling (front and rear turn signals @ 27 watts each) + another 54 if you are using the brake at the same time you signal or for those of you who keep the brake on while stopped and the turn signal at the same time! (don't forget about the other front light still running @ 8 watts) + the 4 speedo/tach bulbs running @ 3 watts each (12 watts) I am confusing myself self with all these #'s! Bottom line is the less wattage the better.

Fergy-
I am purchasing 4 #74 LED bulbs (See post under this one about dash lights) for the speedo and the tach and another bulb for the license plate to replace the factory one. The factory bulbs are 3 watts each in the speedo/tach. The 12 volt#74 LED bulbs are rated at 18-22 ma (mili-amps) I also have the LED tail light/brake light bulbs. I will let you know how they work and if it's worth the $.

Hopefully when I'm done all the lights on my bike will be LED's (except the dash lights for the oil,neutral,headlight,bright etc).
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post #5 of 19 (permalink) Old 05-17-2007, 05:12 AM
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Hmm, where's Hizzo been??
Didn't he have some numbers on what kind of wattage is used and what he expected using LED's?


AKA: Tim & 'The Adventure Cycle' VROC #24567, NEVROC, SteelCity VROC


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post #6 of 19 (permalink) Old 05-17-2007, 11:02 AM Thread Starter
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Good info y'all, I appreciate the replies. Still trying to find something in LED driving lights or fog lights but haven't found anything worth looking at so far. I figure with all the new technology in LED's, there would be someone coming out with H3 conversion bulbs for fog lights but I'm not seeing anything.

Fergy
Kyle, TX VN750.com member #707 VROC#19556
2002 VN1500 Classic
Spline Lube Procedure, with photos, R/R Relocation and Coil Mod
Rusty Tank Cleaning!
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post #7 of 19 (permalink) Old 05-17-2007, 01:15 PM
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I don't know if they will ever have an effective LED driving/fog light. The biggest problem is focusing or projecting LED light to get any amount of usable distance. It would be really nice though. They have made some good advances with LED flashlights, but the distance is still a problem.
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post #8 of 19 (permalink) Old 05-18-2007, 09:33 AM
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Yeah Hyper, you're right.

Hizzo seems to have been strangely absent of late--for the most part, anyway....
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post #9 of 19 (permalink) Old 06-22-2007, 01:57 AM
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I installed the wide angle bright white LED's. They actually work pretty well. I don't know why the tach is not showing up very well. It is actually almost as bright as the speedo. Took pics w/ no flash. The first was no headlight the second was w/ headlight on. To see pics click on link below

https://www.vn750.com/forum/showthread.php?t=4146
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post #10 of 19 (permalink) Old 06-22-2007, 08:38 PM
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LED Bulbs

Do you think it would be possible for someone to put together a list of LED bulb part numbers (or specifications) and the location of replacement on the bike? This would help all of us 'electronically challenged' who would like to save valuable wattage requirements.

Ben-
SW Ohio

'02 VN750
Pipes drilled
Spline lubed
R/R relocated
AGM batteried
Iridium equipped
LED tail lighted
8000-ish miled
Soon to be MCCTed

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