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Blue wire bypass - headlight relay mod

36K views 57 replies 24 participants last post by  Mikeee15 
#1 · (Edited)
This guide bypasses the headlight relay, lighting your headlight when you turn the key, instead of when the engine turns.

Don't ask me about the pros/cons of this; I'm sure it will be discussed.

Video detailing the procedure at https://www.youtube.com/watch?v=C1_1MTfiJb8

On the left side of the bike remove the side cover. Unscrew the bottom screw and pull the side cover off. If you are sitting on the side of the bike, facing the side cover, pull directly toward you.

http://i16.photobucket.com/albums/b5/crowley1027/vn/IMG_20140323_061053.jpg
You will see a Palm sized black box with two connectors coming out the right side of the box. One is a smaller ten pin, one is an 8 pin.

http://i16.photobucket.com/albums/b5/crowley1027/vn/IMG_20140323_061153.jpg

Don't make the mistake I made - don't touch the ten pin connector. I pulled the blue wire from the 10 pin and moved it to the 8 pin. This is WRONG.

Pull out the 8 pin connector.

http://i16.photobucket.com/albums/b5/crowley1027/vn/IMG_20140323_061246.jpg

There is a blue wire. Pull the blue wire out of its spot (or push it from the front of the connector to reduce stress on the wires) and move it to the empty spot on the same connector.

http://i16.photobucket.com/albums/b5/crowley1027/vn/IMG_20140323_061333.jpg
http://i16.photobucket.com/albums/b5/crowley1027/vn/IMG_20140323_061559.jpg

If the spade connector pushes out as you push the connector in, just connect the plug, then push the spade connector into the empty spot to secure it.

Operation complete.
 
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#38 ·
The reserve lighting unit will automatically switch from low beam to high beam if it detects a filament failure. Without you having to toggle the headlight switch. If there is any intention on going to an LED headlight, it could cause flickering because the LED bulbs do not consume as much power as the stock incandescent bulbs. It can be bypassed very simply by using a jumper across 2 pins on the connector. That mod can be easily found on here (with pics) by running a search on “RLU bypass”
 
This post has been deleted
#41 ·
Please stop commenting on technical threads. There are plenty of us here that can help that know how to work on these bikes. If you're here to "learn" just follow along. This is getting annoying fast and if you keep it up I'll suggest you get booted again. I'm asking nicely this time.
 
#43 ·
This “person’s” phrasing was a dead giveaway to the phoniness. Once used the term “mechanical wrench”, who says that?
The other point I made against them was if you’re looking to get a motorcycle and/or learn about them why would you join this forum? Why pick a forum dedicated to a single bike type that hasn’t been produced for 15yrs.
 
#45 ·
This is pretty old subject but I did this at one time. Can't really remember why, but probably the headlight wasn't coming on after starting. Anyway, I also put a toggle switch in line and mounted it on the side cover. That way I am in control of headlight on/off at all times - just like the bikes in the old days. Some times I ride without the headlight just to save the stator some work.
 
#48 ·
I’ve converted all my lights to LED, I don’t know I’d say it’s “harming” the r/r. Although electrically speaking its creating more load for it. If I do the math I freed up about 70w by switching out all the stock bulbs. I added driving lights and a phone charger and I still have some to burn if I want to add something else without worrying about taxing the bike.
 
#52 ·
Some of what I'm going to say is speculation, so take it with a grain of salt.

The original R/R is a shunt style, which takes any extra pixies being generated and sends them back to the stator by dropping the resistance between the legs of the stator, short-circuit style. This leads to the wires themselves being the highest resistance items in the circuit, and overheats them (like melting a cheap extension cord while using a high amperage tool). This can bake the R/R if the bike's systems arent using a high enough percentage of the energy produced by the stator. If you dramatically decrease the energy used by the bike's systems (via LED conversions) you increase the amount of short-circuiting being done by the R/R. I THINK that in this setup the stator is always producing it's maximum current.

A Mosfet R/R increases the resistance of the circuit, blocking the amount of current that can flow between the legs of the stator, and just sips off what it needs to run the bike's systems. This would lead to cooler wiring, since the overall current between the stator and the R/R is lower. I THINK this also decreases the drag on the engine. I remember seeing a demonstration once where a kid would turn a crank generator, and the demonstrator would flip a light switch to make the generator light up a bulb. The crank instantly got harder to crank because it was now actually doing work, whereas before with an open switch, there was no current, so the generator wasn't technically doing any work. Same should apply here, where the overall work is lower because no current is being shunted. Any decrease in wattage on the bike would translate to lower heat in the wiring, and less gas wasted. There's probably a diminishing return R/R heat reduction buildup as wattage demand decreases, since the mosfet must be providing resistance based on load.

If anyone can back up or refute my speculations, I'd love to hear it.
 
#53 ·
I have also read the stator runs at full output all the time, relative to rpm of course.

Side note, just the fact that there are magnets spinning around the copper will produce heat. If you search Lenz effect at YouTube you should see some cool videos. Magnet vs. copper is somewhat anti-gravity too btw.
 
#56 ·
Eddy currents! That's what I couldn't remember earlier. Those laminations should wick heat away.

So many dead stators have oil coking and ash built up on them, but the rest of the engines are relatively clean. Makes me think there's some extra heat in the stator itself.

There's a thread where the poster engineered an oil line spraying onto the stator to improve cooling. Don't recall if it improved anything, think maybe kawi has relied on oil splash to cover the stator. You get oiled if you start it without the oil cap.

In one Lenz effect video, magnets spinning at 14,000 on a router table, a 2" copper pipe glows orange when held over the magnets.

A magnet dropped through copper pipe can't drop at free fall, the eddy current slows it down.
 
#57 ·
This guide bypasses the headlight relay, lighting your headlight when you turn the key, instead of when the engine turns.

Don't ask me about the pros/cons of this; I'm sure it will be discussed.

Video detailing the procedure at

On the left side of the bike remove the side cover. Unscrew the bottom screw and pull the side cover off. If you are sitting on the side of the bike, facing the side cover, pull directly toward you.

http://i16.photobucket.com/albums/b5/crowley1027/vn/IMG_20140323_061053.jpg
You will see a Palm sized black box with two connectors coming out the right side of the box. One is a smaller ten pin, one is an 8 pin.

http://i16.photobucket.com/albums/b5/crowley1027/vn/IMG_20140323_061153.jpg

Don't make the mistake I made - don't touch the ten pin connector. I pulled the blue wire from the 10 pin and moved it to the 8 pin. This is WRONG.

Pull out the 8 pin connector.

http://i16.photobucket.com/albums/b5/crowley1027/vn/IMG_20140323_061246.jpg

There is a blue wire. Pull the blue wire out of its spot (or push it from the front of the connector to reduce stress on the wires) and move it to the empty spot on the same connector.

http://i16.photobucket.com/albums/b5/crowley1027/vn/IMG_20140323_061333.jpg
http://i16.photobucket.com/albums/b5/crowley1027/vn/IMG_20140323_061559.jpg

If the spade connector pushes out as you push the connector in, just connect the plug, then push the spade connector into the empty spot to secure it.

Operation complete.
so I’m another victim of the headlight not working and did as you said, which worked. However, when the headlightswitch is in low beam the bulb actually starts to let of smoke. But high beam doesn’t. Any ideas why. Maybe I should as another inline fuse the headlight but that would be redundant and not make sense since it’s running thru a fuse from the junction box.
 
#58 ·
This guide bypasses the headlight relay, lighting your headlight when you turn the key, instead of when the engine turns.

Don't ask me about the pros/cons of this; I'm sure it will be discussed.

Video detailing the procedure at

On the left side of the bike remove the side cover. Unscrew the bottom screw and pull the side cover off. If you are sitting on the side of the bike, facing the side cover, pull directly toward you.

http://i16.photobucket.com/albums/b5/crowley1027/vn/IMG_20140323_061053.jpg
You will see a Palm sized black box with two connectors coming out the right side of the box. One is a smaller ten pin, one is an 8 pin.

http://i16.photobucket.com/albums/b5/crowley1027/vn/IMG_20140323_061153.jpg

Don't make the mistake I made - don't touch the ten pin connector. I pulled the blue wire from the 10 pin and moved it to the 8 pin. This is WRONG.

Pull out the 8 pin connector.

http://i16.photobucket.com/albums/b5/crowley1027/vn/IMG_20140323_061246.jpg

There is a blue wire. Pull the blue wire out of its spot (or push it from the front of the connector to reduce stress on the wires) and move it to the empty spot on the same connector.

http://i16.photobucket.com/albums/b5/crowley1027/vn/IMG_20140323_061333.jpg
http://i16.photobucket.com/albums/b5/crowley1027/vn/IMG_20140323_061559.jpg

If the spade connector pushes out as you push the connector in, just connect the plug, then push the spade connector into the empty spot to secure it.

Operation complete.
It took a little Coaxing to get the wire out of the connector. BUT it slipped right in the empty slot. Voilla Headlights!!!! Thank you!! Easiest explanation Ive ever seen. 2 thumbs up!!
 
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