BrianHill, What alot of guys have done is buy an electric unit out of a Lincoln Mark 8 OR a Ford Taurus (87-9x?) and then purchase a DC controller unit. You can program the unit to come on and go off between certain set-points, the rest of the time it's not running unless the sensor hits that set point. I think the website was dccontrols.com , I could be wrong on that...
Good luck wiht it
Dano
