It is very rare for a HWH harness to have a short. The solenoid usually is the cause of the short. What usually burns out that solenoid is you have a jack that is sticking on retraction and the red down light does not go out. That means when in STORE, the light does not go out and that leaves the power to the solenoid. Those solenoids are momentary solenoids and should not have 12 volt power to them longer than 15 minutes. If the time limit goes over 15 minutes the solenoid coil overheats and shorts out. That is the purpose of those 15 amp fuses. To protect the HWH control box from this type short. Once the last Red jack down light goes out the power to the solenoids is turned OFF. Doug
