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Author: Subject: Wiring diagram symbols
ash_hammond

posted on 29/9/15 at 07:50 AM Reply With Quote
Wiring diagram symbols

I'm more trying to understand the significance of the dashed lines coming out of the fuses?

I understand that the charge light only needs to be live when the ignition is on and switches off when current is generated, which is why i assume this wire is tagged with "hot in start and run". Is this why the lines are dashed and not a solid one, being a switched live?

The other two connectors go direct to the battery via some fuses. Are these dashed lines to say these are only live when the alternator is generating current? I know technically they are live from the battery. Just more trying to understand rather than just blindly follow a diagram.

Cheers.









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ash_hammond

posted on 29/9/15 at 07:59 AM Reply With Quote
Just released it might be because it is fused?







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Smoking Frog

posted on 29/9/15 at 09:10 AM Reply With Quote
I'm guessing here! The dashed line indicates that part of the circuit is shared with another cable.
The "hot in start and run" refers to +ve during engine cranking and also when engine is running.
The Wht/Blk cable from the alternator to the charge light is low (-ve) until sufficient current is generated when it becomes high (+ve).

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ash_hammond

posted on 29/9/15 at 09:26 AM Reply With Quote
quote:
Originally posted by Smoking Frog
I'm guessing here! The dashed line indicates that part of the circuit is shared with another cable.
The "hot in start and run" refers to +ve during engine cranking and also when engine is running.
The Wht/Blk cable from the alternator to the charge light is low (-ve) until sufficient current is generated when it becomes high (+ve).


Thanks for the reply. Sorry, if these are really dumb questions. I really want to understand why a wire goes from A to B rather than just connecting it because the diagram says so.

Fully agree with this.

quote:
The Wht/Blk cable from the alternator to the charge light is low (-ve) until sufficient current is generated when it becomes high (+ve).








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DW100

posted on 29/9/15 at 09:42 AM Reply With Quote
There is no convention as to why the lines are dashed its down to the person drawing. Normally it means there are alternative set-ups depending on specification of the vehicle, but it is normally mentioned in the wiring diagram key along with abbreviations used for colours etc.
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Smoking Frog

posted on 29/9/15 at 10:15 AM Reply With Quote
quote:

Thanks for the reply. Sorry, if these are really dumb questions.


No problem, ask away. I read on here somewhere there are no dumb question only dumb answers. Talk about dumb, before I joined this site I didn't know the difference between a tie rod and a track rod end and had never used pop rivets.

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hearbear

posted on 29/9/15 at 11:42 AM Reply With Quote
There are other wires sharing but not shown





3.9Ltr SSC Stylus should be fun

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