manual fan switch install

[smorgan87]

Its a 0v on fan solonoid. When the ground circuit is open the fan comes on. So cut the ground wire at the solonoid, run 2 wires from there to a toggle switch in the cab (wherever youd like the switch to be) when u turn the switch off opening the now extended ground circuit the fan comes on. Turn the switch on closing the circuit the fan goes off and follows whatever the computer wants it to do. @m*m^2 tunes already have the computer ignoring the manual switch if not a @m*m^2 tune then it should be an option in parameters to change.