93 mustang, relay wiring, fan, water pump

Here is what I got.   I have a 93 Ford Mustang, I have an Electric Fan and Electric Waterpump setup on the motor and here is what I want to do:  Have the Fans and Pump turn on when the ignition is in the Key On/ Engine Running and off when the ignition is off.  I also want to be able to turn them on and off via toggle switch when the key is off so I can let my car cool down in the pits with nothing on except the fan and pump.  The Fan and Water Pump have ONLY  power and ground wires coming off of them since they are single speed. 

What relay would work with this ?

What is the best way to wire this up ?

Thanks,

Mike