Headlight dim during acceleration

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Marauder03
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My Bike: Intruder 1400vs
Location: Cleveland Ohio

Headlight dim during acceleration

Post by Marauder03 »

New to me 1993 1400 vs I have noticed at night when under hard acceleration my light dims. Question is if this is normal for these bikes or do I have some sort of problem. Thanks

Lechy
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Re: Headlight dim during acceleration

Post by Lechy »

2 things bear checking out.
1: Take your battery and have it load tested.
2: trace the wires from the alternator to the regulator/rectifier, there will be a plastic connector, split this and make sure the contacts are clean and not discolored, the 3 yellow wires are the important ones.
Grow old disgracefully young man.

navigator
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Re: Headlight dim during acceleration

Post by navigator »

Yea, make sure those yellow wire connections are clean or they will arc and melt.
http://www.intruders-alert.com/viewtopi ... =13&t=8148

Marauder03
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Re: Headlight dim during acceleration

Post by Marauder03 »

Will do, thanks for the replies guys!!!

Lechy
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Re: Headlight dim during acceleration

Post by Lechy »

Like this.

Image

[emoji41]
Grow old disgracefully young man.

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Fred
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Re: Headlight dim during acceleration

Post by Fred »

Slow down, you are exceeding the speed of light.

Electricty is made by the engine turning, it will make no difference if it is under load or not.

navigator
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Re: Headlight dim during acceleration

Post by navigator »

Fred wrote:Slow down, you are exceeding the speed of light.

Electricty is made by the engine turning, it will make no difference if it is under load or not.
:bs: The load certainly does come into play.

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Herb
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Re: Headlight dim during acceleration

Post by Herb »

navigator wrote:
Fred wrote:Slow down, you are exceeding the speed of light.

Electricty is made by the engine turning, it will make no difference if it is under load or not.
:bs: The load certainly does come into play.
+1
I can't seem to win the lottery. I think I have used up all of my good luck riding motorcycles.

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Fred
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Re: Headlight dim during acceleration

Post by Fred »

I am talking load on the engine which has nothing to do with Voltage output.

navigator
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Re: Headlight dim during acceleration

Post by navigator »

Fred wrote:I am talking load on the engine which has nothing to do with Voltage output.
The load on the engine??
Dude we are talking electrical load here.... read the threads title :bonk:
You are such a tool.

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Fred
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Re: Headlight dim during acceleration

Post by Fred »

navigator wrote:
Fred wrote:I am talking load on the engine which has nothing to do with Voltage output.
The load on the engine??
Dude we are talking electrical load here.... read the threads title :bonk:
You are such a tool.
How can you diagnose when you dont read the problem. The op said that the light dimmed under heavy acceleration.

It doe'snt matter if he is pulling a caravan or going down a hill it does not affect the output of the regulator.

3000 RPM uphill or down is the same Fks sake.

navigator
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Re: Headlight dim during acceleration

Post by navigator »

You should know that the voltage changes when the rpms change, the excess is shunted to ground.

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Fred
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Re: Headlight dim during acceleration

Post by Fred »

navigator wrote:You should know that the voltage changes when the rpms change, the excess is shunted to ground.
Yes of course I agree so what has heavy acceleration got to do with it that the op spoke of. --- Nothing.

He probably mean his bike seems to lose voltage under higher RPM. Now it becomes a bit clearer with some mechanical reason behind it.

Marauder03
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Re: Headlight dim during acceleration

Post by Marauder03 »

After hours of chasing this down I found the problem in the headlamp bucket. Turns out I had a bad connection between some wires, problem solved for now. Thanks for all the help and input.

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