Not sure what you mean by this: "I do not have a radio that will connect to a certain channel It is a 2008 Honda CRV."
The iPad itself does not transmit to FM radio. you would require an FM transmitter for that. Plugging it into the lighter only charges the iPad, but will do nothing else.
Your 2008 Honda CRV should have a way of selecting FM stations manually that will allow you some degree of control to choose a station if you have an FM transmitter.
Without knowing exactly what you have it is impossible to offer any kind of advice.
It would probably be a good idea to connect your local Honda dealer and ask how to manually set radio stations.