My (120V) pool light dims & brightens the whole time it is on because it does not have the proper voltage going to the outside light junction box. I disconnected the wires at the outside junction box, the "hot" red wire only reads 30.6v, should be 120v. I opened the Power Center, traced the red wire from the outside light junction box to what looks like a relay box (above the circuit breakers) with 8 pins and checked the voltage there-30.6. So the voltage leaving the Power Center going to the light junction is box-30.6v. I changed the Ground Fault circuit breaker thinking that was it. No Change. Could this relay box be the problem?