I wanted to update all who helped me with this. I installed a new Intelli-Power converter (bye bye WFCO)and a new water pump. I had already went through all the wiring and found no problems. With the WFCO when I turned on 3 lights the fan on the converter came on and was loud, now I can turn on almost all of them and the fan barely runs. After changing the pump from a Flojet to Shureflo, I don't have such a voltage drop at the pump. I am thinking that the motor must have been going bad. Again I thank you for all your input.