#### engi57

##### New Member

Hello,

This is my first post on this forum so if anything needs changing just let me know. I am looking to install a Dual Cigarette style power socket on my Honda CB500s. I have had it fitted and working on there before, directly powered from the battery, but I am looking for a neater/safer solution with a fuse holder, power indication light etc. I have drawn a very basic schematic to illustrate what I am aiming to achieve. I have a couple of questions regarding my diagram;

- How many watts are provided through a motorcycle "hot" wire? I know that W=VxI but I don't know the amperage either!

- Are all "hot" wires equal to each other? do they all carry the same voltage/amperage? Just so I know if I can tap into any supply on the wiring loom.

- Since vehicle wiring (on most motorcycles) is designed in a way that assumes electrons flow from positive to negative, is my schematic possible? Or do I need to run my components the other way round? Surely if a fuse holder was the first thing after the positive feed it would negate the effect of having one in the first place because it would be the last thing to be reached by a surge?

I have included a picture of my schematic (apologies for amateur drawings) and a schematic of my bikes wiring loom. I know that I will probably need higher than a 1/2 watt resistor for the LED but as I don't know how to calculate the amps going through the live wires I'm not sure which one to use. I have linked the "BBcode" to the image since this is what is recommended by imgur for forums, so please let me know if you can't see them. Feel free to offer any suggestions and I will appreciate any help/advice.

Thanks.

[/IMG] [/IMG]

This is my first post on this forum so if anything needs changing just let me know. I am looking to install a Dual Cigarette style power socket on my Honda CB500s. I have had it fitted and working on there before, directly powered from the battery, but I am looking for a neater/safer solution with a fuse holder, power indication light etc. I have drawn a very basic schematic to illustrate what I am aiming to achieve. I have a couple of questions regarding my diagram;

- How many watts are provided through a motorcycle "hot" wire? I know that W=VxI but I don't know the amperage either!

- Are all "hot" wires equal to each other? do they all carry the same voltage/amperage? Just so I know if I can tap into any supply on the wiring loom.

- Since vehicle wiring (on most motorcycles) is designed in a way that assumes electrons flow from positive to negative, is my schematic possible? Or do I need to run my components the other way round? Surely if a fuse holder was the first thing after the positive feed it would negate the effect of having one in the first place because it would be the last thing to be reached by a surge?

I have included a picture of my schematic (apologies for amateur drawings) and a schematic of my bikes wiring loom. I know that I will probably need higher than a 1/2 watt resistor for the LED but as I don't know how to calculate the amps going through the live wires I'm not sure which one to use. I have linked the "BBcode" to the image since this is what is recommended by imgur for forums, so please let me know if you can't see them. Feel free to offer any suggestions and I will appreciate any help/advice.

Thanks.

[/IMG] [/IMG]

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