i have a single electric fan and it used to come on when the key was on but who ever owned it before me cobbed all the wiring and when i changed motors the fan wont come on anymore, so i was just wandering if i could run a wire stright from the fan to the fuse box, to a port that comes on when you turn the key on?

 

Better to use a relay because the fan will pull about
20 or more amps as it's getting up to speed,10-12
amps at full speed,it's easy to rig up a reliable
thermostatic control for an electric fan-did it on an'89
v-6 firebird with FUBAR fan wiring,used a flex-a-lite
adjustable thermostat of the type that has a metal
sensing bulb with a capillary tube connecting to the
switch-took the upper radiator hose off,put the sensing
bulb into the hose,reinstalled the hose with the
capillary tube leading out(a dab of silicone under to
help seal)used this switch to control the fan relay
with the relay taking power from a fused feed off
the alternator output stud.