i just went through this and had it setup with that relay. i used the 75 amp bosch relay and a toggle switch. the haydens usually have an inline 30 amp relay i think. the mark 8 fan draws huge current and spikes to 80 amps at startup.
someone more knowledgeable can chime in. as far as controllers. i know jricher has posted 3 that work. one hayden model thats the bottom line choice, one spal controller and the dcc controller.
someone more knowledgeable can chime in. as far as controllers. i know jricher has posted 3 that work. one hayden model thats the bottom line choice, one spal controller and the dcc controller.