Infineon controller wiring

[HypnoToad]

I'm planning to replace my ezee controller in an Infineon controller, so I'm going to redo the wiring also. I was hoping to run a single 8 core cable to the handlebars, and was wondering if I could combine the grounds and +5v  for the halls and throttle for example. If this is possible then this is how I plan to  wire it up using 8 cores:

1 ground 
2 5v for hall and throttle
3 throttle
4 hall 1
5 hall 2
6 hall 3
7 brake cutoff
8 battery + for voltmeter

I'll run the phase cables separately as they are really thick, now my question is has anyone else done this? Will it work or will I need to run more than 8 cores?

[HypnoToad]

Have I put this thread in the wrong section?

Wild I be better off asking in Ebike general?

Thanks

[Jeremy Harris]

All the ground connections are common on the board in the controller, so yes, this works fine. I've done much the same on my current folding bike, just to reduce the number of wires coming out of the controller. The only thing to watch is the +5V wires, as the feed for the throttle usually has a series diode (it does on all of the 6 FET controllers I have, for example, and on the 18 FET one I have). This means that the throttle "+5 V" isn't 5 V at all, but around 4.4 V to 4.6 V or so. The Hall +5 V is a true 5 V, fed directly from the +5 V rail. Best check your controller to see if yours has the series diode in the throttle connection. The work around is to use the Hall +5 V to run both the throttle and the Halls, and if you get the over-voltage cut out throttle problem at full throttle, then add a series diode in the wiring loom to the throttle +5 V feed, leaving the Halls with a true +5 V but dropping the voltage by half a volt or so for the throttle.

[HypnoToad]

Thanks for the reply, I still haven't had time to wire everything up yet so it's reassuring to know that 8 core cable will be enough. I'm also running a 6 FET controller, and I'll bear. In mind the possible 5v issue between the halls and the throttle, a diode is easy enough to add if I need to.