Pedal assist sensor wiring, help requested

[Old John]

I have an 8fun electric bike conversion kit. In fact I have 2. One was installed no problem, the other is where I need help.
The issue is that there is no room for the pedal assist sensor on the crank side as its full of 3 gears.
I bought a left hand sensor but the wiring colours are different.
I want to rewire the plugs but don't want to blow anything up in the process so i'm looking for some help in wiring colours.
The 8fun kit has 3 wires coloured Brown, Yellow & black.
The left hand sensor also has 3 wires but they are coloured Red, Blue and Black, and within the plug are positioned differently.
I think and emphasize THINK, that the wiring is Red (&brown) are the power. Black is the earth and the Yellow (&blue) are the signal.
Can anyone either confirm this or correct me please?

 

[harryS]

I think you're right, but if you have a voltmeter, you could verify the power from the controller side.

On the PAS for a KT controller, power is 4.5 volt, while signal is 5.0V. Hence red/black is 4.5 and yellow/black is 5.0. Why is power lower than the signal? I believe there's a short circuit protection on power, which drops it .5 volt..

I bought a PAS sensor earlier this year from amazon, and it came blue, yellow, red. Yellow was ground. I had to test it on a bread board to figure that out,

 

[Old John]

Thanks for that Harry. I will check as you suggest. I have a feeling you could be right as if yellow is the earth, it would match up with the 2 pin locations.

 

[manman]

So my pedal assist connector is orange black and blue coming from my bike,my problem is that coming from my controller it is red white and black,I'm not very electrical I'm 14 but does anyone know what would be the correct combination.im guessing black will go to black any help please