I have done this but now i am scared that the wiring is ok . The charging ports are they safe . Having two chargers one doing the 24v & other 12v now the Conroller duz the cel charging thing , but it's only wired up to The - to the battry & the red + is going to the switch so it's not really controlling things. Only help on this plus do I need to run a relay or a fuse on this . It's the only way Ican get a controller to run . Iv tryed 36v ones and they don't work . & the seller just tells me that it's me that plunged it in wrong . What can I do . I got a 3pin twist grip bit never got it to work . If anyone Nos how to make the 3wire red/blue/black/ & yellow if there is a way to put it to the razore200 4pin ends then let me no.