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I have a razor e200 standard/50w motor and so on . Am going to put a 36 controller into it with the twist grip 36v . And put 3 battery's. Now the 36v controller is different. Is it a case of as long as I get the power to the motor yellow & blue. & red & black to power from the battery's with the other wires as long as I get the port LEDs & the charger leads right the work the twist grip as there is a yellow wire witch I don't no wear to put it . . I did try befor but lost by nerv but when I did it I only put one battery into the power 12v is that why the controller never made a cliik . Also the two 24 v battery's at mo one lead red Gos to a. Relay and the black as well so it makes 24 v but though a relay. If I do 3 battery's will the standard relay take it. Or pop out . If it pops out can I replace it with a fuse instead . Any help . I have put pictures up of the new controller & the old one . Just need help . With wires on it . Was it a case I got it wire up ok but as only use one 12v battery to see if I got power is did I need all 36 v. Also if I put a switch on the last battery one say the middle one with a jump lead can I put a switch there so I can make it 24 v if I want to X or if I keepet my old controller as its working like new can I put 36 v onto it but uses a switch so going up hills I can use it . So it would be 25w motor on a 24v controller but now and again 36v switching it on. Is it the middle battery u take it from as they r jumper lead . Am I right in and of this

Csn I by not use the reley & use fuse in stand

So I don't need the relay but put a fuse at the battery pack . So asking I put the port charger to it from the controller it will not need the relay. I really did think I had it sorted. Trying to match up the wires did tat front he new controller. But I only put one 12v battery to it so may my not the power to turn it all on .. Do u have a diagram of a 36v but make it I vsn trun the switch off one it on 12v any info please

When u say I don't need the relay I did think as long as it had a good fuse it would be fine. But running the fuse from the + that plugs in to the red & black main power. 1st ., Tthe power locks is that the on & off switch . Mine r red & blue . It's the twist grip that's hard . It's got / red / blue: green . Old twist grip had 2 browns & orange it think . But the new controller had the blue /red / green. But the grip has a yellow wire any idea wear that gos. I fill with all them help this site has given me & info I can now finishing this upgrades to my scooter . But please any help in fiting or wear out out the wires on this grip. Looks like now I will have to put a 350 w motor as the 800w one is a 8mm chain & sprocket . Did not see thet coming . So now I need a 350 W motor instead .

It's has the 3 wires on the grip that Go's to the 800w controller . Blue/black/red but it also has a yellow one., That iv been told it to make the LED on the twist grip light up . Is that true. Or how much is your twist grip u sell that will work on this 36v 800w controller. Plus do I change the back sprocket on the wheel to say 8mm and 42/52 teeth sprocket. Or put a 6mm sprocket on the motor . What it the best to do

Thank u you really don't no how much help you have given me . I now think I can do this mod . I will order the 8mm sprocket from you for the back wheel of my razor E200 change it from a 6mm to a 8mm . And the 42 teeth will be fun. I can then stay with the 800 motor 36v. I for get the switch I say on 36 like that diagram u sent me. I no how to mount the motor . And will need welding. The Twist grip the old one at the mo has 4 wires brown and so on . But the new controller I am putting in has a blue/ red / black. And the new grip 36v i am putting in also has , blue/black/red plug on the grip and plug on new controller. But on the grip it's got a yellow one . If u can sort that for I am am ready to go for it again. When finished I put pictures up. But so far you been so much help thank u

Like I say I am ready to do this with all the help u have given me. Just one more thing. What size amp fuse do I use will a 20amp be ok , am running like u say straight from the last battery.

Dam u lot are good . I could not of done this mod if it was not the help you have given me . Thank you so much . I will be mounting the 800w motor soon and when it's all done I put soon pic of the scooter . Thanks again for all the help