Robin2:
Do you know where on the circuit board are the connections to the H bridge?What does the circuit board do? Is it the complete radio receiver and controller all in one?
What are you planning to use the Arduino for? You used the word "anonymous" in your first post, but perhaps you mean "autonomous"? Will the Arduino replace the radio receiver and control the car as a robot? If so you will also need to control steering and, presumably, detect the car's position.
1EAS1:
Or could I wire the H bridge from the circuit board itself?
Yes sorry I meant autonomous;) The circuit board transmits the radio signal from the controller to control to servos, 1 at the top is to turn the wheels and the bottom one is to make it go forward and backwards. I don't care for the remote controller, I want to ditch it and just use it with the arduino and make a program to automatically do a preprogrammed course. I'm planning to use the arduino to just tell the motors where to go with a preprogrammed track. I plan to use the car as a robot and for the steering I can add a second motor in the code and create custom turns to do.