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I have ordered a controller for kids atv to work with 2000w bldc motor. The display connector as shown in the picture has only three wires while most of the lcd displays need 5 wire connector, how i can connect this to a display? There is another connector with the name of "converter", what is its purpose? Thanks.
 

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I have ordered a controller for kids atv to work with 2000w bldc motor. The display connector as shown in the picture has only three wires while most of the lcd displays need 5 wire connector, how i can connect this to a display? There is another connector with the name of "converter", what is its purpose? Thanks.
Its funny i have one like this... i managed to run my Leaf motor with it on 50Vdc battery. Leaf motor would turn just fine....

I think integrated means +5/GND and throtttle/brake/throttle switch if you use it
Display takes +5V/Gnd from other connector and sends RPM signal towards LCD. I think LCD means Cycle analyst display like this....
http://www.ebikes.ca/product-info/cycle-analyst-3.html

Note it uses one wire towards LCD while it uses 5V to supply it.
Hope it resolved your wiring.

EDIT: Oh yes i think converter means it changes direction
 
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