Regtable

hi hoping this is a quick one for one of the more technical minds here, i have a gl that has been stripped for parts i was thinking of a use for the heater matrix/fan from behind the dash. basic would be pump heated water from a server rack cooling the units and use the fan to expel the heat. not bothered if its running full speed but im not sure of the best way to wire it up to a 12v supply would it be direct to the motor just + - and the center wire is for speed sensing... or is it more complicated

Don Clark

Diags for the MY98 A/C system