Not really, the pads are flush mounted attached to the bottom of the tanks. As far as the wiring goes, I zip tied wires to water lines etc...
I ran the wires towards the back passenger side of trailer. Then I purchased a 12 volt inverter, to plug into the 12 volt cigarette style connector towards the backside of trailer and plugged the 110 wires from the heat pads to the inverter. Or , if you are by shore power you could plug directly into the 110 a/c power and not use the inverter. I'll take a few pics next time i am at trailer. I think it will work pretty slick though. Or at least I hope.