I am new to this site, but have anot education in electronics, mostly in digital. but plenty of experience in analog as well. however I have a washing machine I need to troubleshoot and I am sure it is a switchuge problem. only thing is I have never ran across this particular symbol on a circuit diagram (see pic). i thought the double arrows were for a relay, but the physical wiring has no relays in these runs. so does someone know what these are? I am sorry if this seems a stupid question or has already been addressed.