What's the difference between M6 and M8 Julet and Higo connectors

[PCeBiker]

I've got Julet cables on my e-bikes and bought Julet cable extension that fit but were slightly different.

I found some information,..

 

[PCeBiker]

This is a post by @harryS ,..

IT's usually 5 wires to an LCD display, or 5 pins on a connector. Carefully probe all possible wire pairs on those pins. You said you already done this, . Gotta be battery voltage on one pair. If not, well then there is something wrong with the controller,


I'm interested in finding out what the 5 wires are and what the voltages are.
I'm thinking that the display itself runs off 5 VDC and it monitors the battery voltage to show the voltage or a bar graph.

I don't think the display itself runs off B+ (36V, 48V, 52V) so I want to find out.

I'm going to buy a Green Julet extension once I figure out exactly what plugs I have?

Both my e-bikes (with different displays and controllers) have a Green 5-pin Julet connector, and I don't want to cut into the cables, so I'm buying an extension to cannibalize to make a Pin-Out board.

 

[harryS]

The display is powered by battery voltage, and there are DC-DC converters to lower that to run the logic level cicuitry and to power the serial data port.

With my KT LCD3 display, if the receive data line is broken, the unit can set the PAS levels, but there is no speedometer info, because that's a data packet from the controller. Oddly enough though, the battery icon goes blank, That must be a bug in the display programming, like it need some controller data before it refreshes the icon. Whatever, the battery icon is blank and there's no reason to do that since the LCD3 measures the battery voltage.

I have bought connectors that didn't fit. They just fell apart and needed to be taped. Must have been Julet vs Higo,

 

[PCeBiker]

The display is powered by battery voltage, and there are DC-DC converters to lower that to run the logic level cicuitry and to power the serial data port.

With my KT LCD3 display, if the receive data line is broken, the unit can set the PAS levels, but there is no speedometer info, because that's a data packet from the controller. Oddly enough though, the battery icon goes blank, That must be a bug in the display programming, like it need some controller data before it refreshes the icon. Whatever, the battery icon is blank and there's no reason to do that since the LCD3 measures the battery voltage.

OK, That makes sense.

I'm guessing Battery + and -
Data In and Out with a common ground for the Data wires?

Is that right?

I have bought connectors that didn't fit. They just fell apart and needed to be taped. Must have been Julet vs Higo,

I'm still gunna buy a green connector because I like to fix stuff that ain't broke.

I've got all the other colors except for blue because I have no 4 pin connectors.

I've gotta spend ten bucks to get free shipping and I don't need 5 green connectors, so I need to buy something else that I don't need and may never use.

 

[PCeBiker]

I ordered some stuff.
I measured my connectors, and I have M8 size plugs.

I bought two 48 VDC relays to get free shipping,..

I will have be careful when working with them to stay out of the line of fire.

I don't know if it's safe at the zero line either ??
Perhaps somewhere in between the two ??