Electrical accessories attachment


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Redhot
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Electrical accessories attachment

Post by Redhot » Tue Feb 06, 2018 11:47 am



There's an attachment point for accessories under left hand cover with 15amp fuse. Has this got a relay before it ? Or, should I run a relay from it to power up extra electrical items( in this instance heated grips and vest, about 7 amps total)



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virgilmobile
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Re: Electrical accessories attachment

Post by virgilmobile » Tue Feb 06, 2018 11:56 am

I thought the acc fuse was 5 amp.???
When needing a large power demand I suggest a #12 wire fused at the battery...use the acc terminal to operate a relay to switch this #12 wire on and off.
Use a fuse that's rated at 125% of the expected load.

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Re: Electrical accessories attachment

Post by Redhot » Tue Feb 06, 2018 12:39 pm

Virgil, your right, it is only 5 amps.Thanks ! That negates the original question then. Does this work ? I'll run a 20amp lead from battery to a relay, then to a nearby separate 4 way mini fuse block. Relay actuated from accessory post,( as it's a switched live). Then I can run accessories all with their own fuse. So..does the lead from battery to relay, need to be fused, to protect the relay ?

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Dusty Boots
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Re: Electrical accessories attachment

Post by Dusty Boots » Tue Feb 06, 2018 2:24 pm

Yes!!
A 30 amp blade fuse close to battery

I have ran 2 x 6 position aux fuse panels both triggered by a 40 amp relay that way

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virgilmobile
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Re: Electrical accessories attachment

Post by virgilmobile » Tue Feb 06, 2018 2:54 pm

Yes from here too.
Try to get the large style fuse holder (ATO).I've had problems using the mini type above 15 amp burning a connection inside.

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Erdeniz Umman
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Re: Electrical accessories attachment

Post by Erdeniz Umman » Tue Feb 06, 2018 2:56 pm

It is a "must" to use a fuse when connecting something directly to the battery. Not only to protect the relay in your case but also protect the bike and you from a possible fire.

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AZgl1800
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Re: Electrical accessories attachment

Post by AZgl1800 » Tue Feb 06, 2018 4:10 pm

+4, yes from here too.

That is how I wired up my Accessory block.
~John

See you at NASR-11 July 10th, 11th, 12th 2018

http://www.northamericangoldwings.com/c ... 9-nasr-11/

Redhot
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Re: Electrical accessories attachment

Post by Redhot » Tue Feb 06, 2018 5:00 pm

Well that's pretty unanimous, a fuse it is then :) Virgil, I wasn't sure about mini fuses, but a much smaller box and all fed by one input. I'm only going to use 3x5amp and one 3amp fuse. (1.Vest is about 4amp. 2.Grips 3amp. 3. ? wire from previous owner that I will have to trace. 4. sat nav 1amp. ) Were you talking about 15amp each fuse or total 15amp causing problems ? I will be using a 20amp standard size fuse for the battery to relay though as that itself won't take up much space.

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Bluewaterhooker0
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Re: Electrical accessories attachment

Post by Bluewaterhooker0 » Tue Feb 06, 2018 10:16 pm

Redhot wrote:
Tue Feb 06, 2018 12:39 pm
Virgil, your right, it is only 5 amps.Thanks ! That negates the original question then. Does this work ? I'll run a 20amp lead from battery to a relay, then to a nearby separate 4 way mini fuse block. Relay actuated from accessory post,( as it's a switched live). Then I can run accessories all with their own fuse. So..does the lead from battery to relay, need to be fused, to protect the relay ?
Something that would be helpful to keep in mind for all future wiring and fusing situations, is the purpose of a fuse. It is not there to protect the "relay" or heated accessories, or any other "load".
A fuse is in its place to protect the wiring.
All wires have rated ampacities, meaning the amount of amperage the wire can safely carry before its resistance starts to generate heat. There are also generally "lengths" attached to those ampacities, as length increases resistance with distance. But for the purpose of motorcycles, the distances or lengths should not be a major factor to consider.
So yes, as others have stated, you always need to fuse a wire of any length, with the proper size fuse, and as close as possible to the source of the voltage, to protect the wire itself from becoming a fire hazard. Therefore, the wire and fuses, both need to be sized to properly handle whatever load you are planning on attaching. Also, I would never over size a fuse for any given wire ampacity.
I just thought that was an important concept to "burn" into your memory for all future wiring projects.
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Re: Electrical accessories attachment

Post by WingAdmin » Tue Feb 06, 2018 11:04 pm

You might want to look into the Electrical Connection Power Plate - designed specifically for the GL1500, and once you replace the garbage relay it comes with, with a decent 40 amp automotive relay, it works great.

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Erdeniz Umman
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Re: Electrical accessories attachment

Post by Erdeniz Umman » Tue Feb 06, 2018 11:28 pm

I am using this similar chart for the correct wiring, although the length is in meters you can easily convert it to feet.

As you will see the note on the chart, the length of the wire is the total of the wire length which means the distance to the product plus the ground from the product.

And for a practical use we can say the third line will give the necessary wire size on a motorbike.
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virgilmobile
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Re: Electrical accessories attachment

Post by virgilmobile » Wed Feb 07, 2018 8:32 am

My favorite stuff to work with...
The black fuse holder is maxed out at 10 amp..It is often fused lower but uses a #18 wire size on a short run.
The smaller red (mini) can have problems when it sustains above a 15 amp draw...I've had several burn contacts.Its a #14 wire.
This fuse holder is actually rated 2-30 amp.Maybe for intermittent use tho.
For heavy power "main feed" to the "power distribution point" I prefer the #10-#12 gauge ATO fuse holder and Max it out at 30 amp.
Also yes...you fuse for the wire size but it can be lower...
I have run a #12 wire 15' through a vehicle to operate a small device....even tho the wire is capable of handling a 20 amp draw I only needed a 2 amp service...I did fuse it at 3 amp...Overkill on the wiring but it is protected properly.Ya just can't go the other way...eg..run 15' of #28 and fuse it at 30 amp...If it shorts that will smoke the wire.
You can supply your distribution point with a 30 amp supply on a #12 wire then tie your smaller fuses/wire to it to feed the low power devices.
This is all about "fuse at the source"and fuse for the wire size max.



Redhot
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Re: Electrical accessories attachment

Post by Redhot » Wed Feb 07, 2018 8:51 am

Thanks Virgil. I try using the lowest rated fuse I can get away with, but a higher cable rating, as you've advised. I'll be using ATO into relay feed.
Wingding, I'm using a fuse block ( Chinese) similar to powerplate, just smaller with mini fuses, and a Bosch (hopefully quality) relay. Thanks for the tips. I'll monitor this fuse block through winter and see how it holds up.
Thanks for the chart. The cable I've got for fuse block feed is rated 30amps,with a 20amp fuse, minimal voltage drop as only a few inches long, and 16amp cable from accessories post fused at 5amp, to switch relay.
Anyone thinking of getting a heated vest, just do it. Less layers, more mobility, more warmth. A heated collar is bliss. Jeez I'm getting soft.



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