Would not bother with a use relay. Changed my 25/amp.fuse to a 30/amp. Fuse. The wiring to the relay is large enough gauge and stays cool now. It would seem to be narrowed down to insufficient quality of manufacturing. It all gets down to the relay contacts being able to flow transference of power. My emergency by-passed relay eliminate going through the contacts. Seeing 9 volts stamped on the relays metal parts make me think its under rated. Checking the main pumps electrical connections this weekend.
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