Thumbs up for LED lights - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
Electrical
Where does this wire go?
Includes Electrical mods, Lights, Stator,
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post #1 of 10 (permalink) Old 06-16-2015, 11:38 AM Thread Starter
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Smile Thumbs up for LED lights

Hi there.
I've just replace all my lights, including the headlight, with LEDs. This seems to have made a massive difference to the performance of the charging system. It now idles at 12 volts, and a small blip of the throttle takes it up to 14 volts.
Also, the bike fired up on both cylinders for the first time in ages.

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post #2 of 10 (permalink) Old 06-16-2015, 05:26 PM
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I've got LED signals that came on the bike, but I think head and tail are stock. What did you use for the headlight?

1991 VN750, purchased 5/5/15, 9092 miles
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post #3 of 10 (permalink) Old 06-17-2015, 10:03 AM Thread Starter
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Here is a link http://www.ebay.co.uk/itm/1800LM-600...item3cf5ae68b8
That's what I used, but I wasn't sure what I was doing, and I bought the wrong one.
The big lump is a power supply which gets in the way when you install it.
You can get them with the power supply remote from the lamp, on a wiring harness. That's the one to go for.
But I really recommend changing the two rear brake lights.
Before changing them, my voltmeter would reduce by about one volt when I hit the brakes, but now there is no reduction at all.
Hope the link works for you. This is ebay UK, but I'm sure they're available in USA.

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post #4 of 10 (permalink) Old 06-17-2015, 10:41 AM
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I replaced my front and rear signal bulbs with LED boards that I make, and my bike now charges at idle using stock charging system.
LED's use much less current and reduce the current load that the charging system needs to provide.

Keep in mind that the stock R/R is a shunt type regulator/rectifier. The stator will always provide the same amount of current/voltage. If the load is reduced on the system and too much current needs to be dumped(shunted to ground) by the R/R, you are putting a strain on the R/R and it will overheat.

Reducing the load on the system is beneficial, but reducing too much could damage your stock R/R because it is constantly dumping current to ground.
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post #5 of 10 (permalink) Old 06-17-2015, 11:06 AM Thread Starter
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Yes, I've had charging issues in the past.
I've got a rewound stator and a MOSFET R/R.
But just consider, under normal running conditions, you have a 50W headlight, two 8W rear lights, a 8W reg plate light, and when you apply the brake, another couple of 22W lights. And we all know how feeble our charging system is.

Just because you're paranoid, it doesn't mean that they are NOT all out to get you.
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post #6 of 10 (permalink) Old 06-17-2015, 01:00 PM
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Quote:
Originally Posted by Limeybiker View Post
Yes, I've had charging issues in the past.
I've got a rewound stator and a MOSFET R/R.
But just consider, under normal running conditions, you have a 50W headlight, two 8W rear lights, a 8W reg plate light, and when you apply the brake, another couple of 22W lights. And we all know how feeble our charging system is.
agreed...no argument here.
All I am saying is that you need to be careful not to reduce the overall load too much on a STOCK R/R.
I added LED driving lights and accent lights, as well as replacing the turn signal bulbs with LED's, yet the overall load is still less than stock.

Adding the MOSFET R/R is a huge benefit since it is more efficient than the shunt style stock R/R.
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post #7 of 10 (permalink) Old 06-19-2015, 05:16 PM
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Quote:
Originally Posted by Limeybiker View Post
Did you use the stock headlight bucket this this LED?

Are these LED bulbs a direct replacement, or do they require a Crystal Cut housing like the HIDs do?

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1985 VN750 Acquired Feb, 2011 - 13,676km
Mods - Ear Shave, Pickup Coil Gap, Drilled Clutch Basket, Shift Tie Rod, Mosfet R/R, MF Battery, De-Goated (H-Pipe), MCCT, Heated Grips, Plexistar 2 Windshield

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2004 KTM SX 125 - 1979 Can-Am Qualifier 250 - 1971 Kawasaki F6

Video Tutorials - Engine Rebuild - Fork Seal Replacement - Grease Swing Arm Bearings - Carb Rebuild - Spline Lube - Refilling Rear Shocks - Grease Steering Bearings
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post #8 of 10 (permalink) Old 06-24-2015, 12:22 AM
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Quote:
Originally Posted by Roach View Post
Did you use the stock headlight bucket this this LED?

Are these LED bulbs a direct replacement, or do they require a Crystal Cut housing like the HIDs do?
IIRC, Ron/Lance328 said that we could burn an HID lamp in a stock VN headlight housing, but we would only get 2/3 of the lighting efficiency that is possible from the crystal cut reflector.

I am interested to know if the same is true with the LED headlight as well. ??

Gordon

1991 VN 750 -"Cosmic Lady" or "Bad Girl"?
Purchased May 16, 2008
Approx.19,300km (12,000 miles)

H-D windshield
Relocated R/R
MF-AGM battery
Fiamm Freeway Blaster horns
F&S luggage rack and engine guard
Kury Offset Hiway pegs
July 13, 2016, Riding on the DARKSIDE now, Classic Radial 165/80-15


TOP TEN THINGS A NEW RIDER/OWNER SHOULD DO. Click on link.
https://www.vn750.com/forum/11-vn750-general-discussion/9127-top-ten-items-you-would-suggest-new-owner-do-his-new-ride.html
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post #9 of 10 (permalink) Old 06-24-2015, 09:13 AM Thread Starter
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OK. This might sound a bit odd, but I've never ridden this bike in the dark, so it would be difficult to make a judgement.
I did fit the LED unit to a stock "bucket", but as I said, I had to mess around with the H4 adaptor to make it fit. You really need the unit with a remote power supply.
I did notice that my indicator warning lights are much brighter now, and the headlight warning light is on all the time.
The light from this is much "whiter" than the stock bulb.
I have to re state that the bike starts much better now. I guess there is more juice for the spark.

Just because you're paranoid, it doesn't mean that they are NOT all out to get you.
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post #10 of 10 (permalink) Old 06-24-2015, 10:29 AM
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headlight warning light on is due to the reserve lighting unit thinking your bulb is burned out.

there is a bypass for that, but not sure how or where to find it at this moment

2005 VN750

Sold 11-27-17
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