[Pacco]

Puller fan kicks on with the turn of the ignition switch. Thus, not allowing the engine to reach proper running temp. I am by no way an electrician. Used circuit tester, the type that lights up either green or red. Using a manual switch. When switch is in the on position the tester light shows a red light when both switch post are touched using the tester. I can pull the 25amp fuse and the fan kicks off. What am I missing?????????