General help, building electrical harness

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Re: General help, building electrical harness

23 Jan 2025 09:32 - 23 Jan 2025 09:34
#908213
But they are not open barrel I have understood is the best to use? Or?
The stock terminals are open barrel. when crimped correctly with the proper tool, the open barrel type crimp the wire AND the insulation. this gives strong crimps which are difficult to pull apart. so there should be no chance of failure. a rather important consideration for a motorcycle. Those other ring terminals may require a special tool. not sure. but I doubt they're as strong as the open barrel type since they don't grip the wire and insulation separately.

image has been posted here on KZR before.
Last edit: 23 Jan 2025 09:34 by H1Vindicator.
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Re: General help, building electrical harness

26 Jan 2025 12:00 - 26 Jan 2025 12:05
#908313
I have made a draft on eletrical diagram overview, do you see any errors or improvement ?
I need to figure out what size I shall have on the fuses and resistor size for the fuel level, the tank only have OPEN/CLOSE switch and the speedo support dynamic value.... so I was thinking adding a constant resistor in parallel, so you have two different ohm for full and half tank.



 
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
Last edit: 26 Jan 2025 12:05 by gordone.

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Re: General help, building electrical harness

26 Jan 2025 12:22
#908315
Give me a couple of days and I will have a look when I get chance

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Re: General help, building electrical harness

27 Jan 2025 01:12
#908330
Give me a couple of days and I will have a look when I get chance
Thank you, I see that the switch position for oil pressure, natural and fuel is located wrong, not part of the speedo, but logical it should be the same...
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine

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Re: General help, building electrical harness

27 Jan 2025 08:42 - 27 Jan 2025 08:48
#908334
  I have made an update, please see below.

My plan when this overview is done is to make a detailed one which will include all cabels, colors, connectors etc.. and then use these two drawings and base for when I build it physically.

1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
Last edit: 27 Jan 2025 08:48 by gordone.
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Re: General help, building electrical harness

28 Jan 2025 07:15
#908383
Avoid possible power leaking from the battery since charging is connected directly against the battery?
 
Only vaguely related:
   We were fooled years ago by a cheap automatic charger that introduced a mysterious parasitic drain when left connected to a bike battery, but while disconnected from the AC wall outlet.  It was marketed by a well-known American motorcycle supplies chain. Over the course of 6 months or so, the parasitic drain would discharge a small bike battery to below cranking capacity.  Took us a few times to realize what was happening & why.  We measured the drain at 20mA, or 0.02A.
   We now use that cheap charger only once a month for maintenance charge of the AGM battery in our portable emergency generator we use for home  power outages. We disconnect the charger from the battey after every monthly charging.

Good Ridin'
slmjim & Z1BEBE
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A Rider looks at your odometer and tags.

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Re: General help, building electrical harness

29 Jan 2025 11:51
#908425
I`m moving the wiring diagram to an new thread instead so more people can see it.
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine

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Re: General help, building electrical harness

30 Jan 2025 15:14 - 30 Jan 2025 15:20
#908453
I am going to ask for help here also. I am thinking about a future plan but it relates to this thread.

When you are trying to do a rewire where is the best place to get wiring diagrams. 
I have a bike I want to rewire next winter and I was hoping to make a new wire harness over the summer.

I don't want to take the bike apart before the summer is over. So has anyone else ever built a harness for a bike without using the original or am I just being stupid and need to use the original harness.

This is new to me and will be my first harness so I get DYE connections and gound cables separately but also things like modern fuses and fuse box holder usb power support etc. I guess my question is what are the things a newbie should watch out for. I have heated grips at the moment but if I keep adding stuff I will probably need to get a better stator. 

Plus what's the don't of building a wire harness. Is heat shrink the best cover for all the cables or is there a product that is better? 

I appreciate any information about this as I am still in the early stages of planning. Also is it possible to just buy a fully complete new harness off someone else? Or even an old one so i can use that as a template?

And the last question I have is I once saw a documentary in bmw and the where building wire harnesses in the factory on a big wooden board with like big ass nails hammered into it and then they ran the cables around them is this a good idea over kill for a one off.

Thanks for your help 

Larry 
Last edit: 30 Jan 2025 15:20 by Larry G.

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Re: General help, building electrical harness

30 Jan 2025 15:57
#908454
One at a time Larry :) let me get Gordone sorted then we can look at yours
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Re: General help, building electrical harness

30 Jan 2025 16:06
#908455
Fair enough I am a year away from just info hunting. To be honest. If you have can recommend a few other threads I can read or builds to look at that would help me out. 

Thanks again 

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Re: General help, building electrical harness

01 Feb 2025 09:07
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Re: General help, building electrical harness

01 Feb 2025 11:17
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