Wiring issues

Herby

Finding my (electric) wheels
Feb 1, 2025
11
1
So presumably these 2 wires are connected in the julet socket and are supposed to be connected ?
 

saneagle

Esteemed Pedelecer
Oct 10, 2010
7,344
3,393
Telford
So presumably these 2 wires are connected in the julet socket and are supposed to be connected ?
One more time. The red wire is connected to the positive battery wire. It carries power up to the LCD for the LCD. When you switch on the LCD, a MOSFETis activated. It joins the red wire to the blue wire, so the power goes back down the blue wire for the controller. The LCD therefore switches on the controller as well as itself.

The MOSFET works like a relay or electronic switch with red one side and blue the other. When the switch is off, a very small amount of electric charge can leak through, like a water tap that doesn't seal properly.
 

Herby

Finding my (electric) wheels
Feb 1, 2025
11
1
I do understand about the red wire carrying a voltage to the lcd screen and making a connection with the blue when switched on. My issue at the moment is that the whole cable is removed from the bike and is sitting on me desk with no battery and no lcd screen attached yet the red and blue are showing they are connected ( no resistance ). This is why I thought the cable may be at fault. By the way battery terminal are just blades and look to be in good order.
Cheers for your input.
 

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