hi, can anyone please help me, i have a sub that needs help in the radio control area. i did not make the model and this is all i know about it. 40mhz, 4 channel. as speed control one elec motor for propeller, servo for from rudder, servo for hydroplanes at rear, water pump for diving. can anyone please make up a wiring diagram showing all the parts needed from the way the battery is wired, the radio control gear, and the pump and rudders, motor etc. and a way to test these items, its all a mass inside and i need to understand how it all works before taking a part and renewing the wiring etc. also waters the best battery pack to use for the sub, at the moment its just recharge batteries ( not sure what voltage as no markings) soldered badly together, i think there must be a better way, does the voltage count, ie will the servos work ok with a larger voltage battery pack.