You need to give us a little more info, Like types or RC's, ESC's, Motors, and batteries, but basicly you need to install a radio receiver, steering servo, esc, and a motor into one of your electric RC's then plug in a fully charged battery, turn on your Transmitter, then your ESC power switch, then if it is all hooked up corectly when you turn the steering on the transmitter the wheels should turn if that is the case then move onto programing your esc according to your esc's directions, once it is programed you should be able to drive it, thats it in a nut shell, most esc's will have a wireing lay out that shows what plugs into where as far as + AND - and what channels on the receiver to plug your ESC and Steeing sevo into, every thing runs off the main 7.2 volt 6 cell battery if this is the type of battery you have.