HI I HAVE JUST BOUGHT A TUCANO MONSTER FOLD BIKE the problem is it has a connection for a throttle ? so i per chest one connected it and nothing ? plus i have no speedo so i checked with the controller and noticed a white wire on it own so im guessing that the last owner as put the wrong controller on the throttle connected to the controller still nothing . and yes i emailed the company who are like most go blind when it comes to emails ? it a 500.w 48.v ive looked on the net but cant seem to find the right one ? so is there any one ells have one of theses models and show me the right controller it needs to be 4.inches long .