I have 2008 Ford Edge my car was overheating so I took it to the shop. They said I need a fan assembly, so I thought I would save a few dollars and do it myself. So I replaced the fan, but the fans will only work if I turn the ac on. So I replace the thermostat still fan not working. I also checked the fuse it looked good. So I don't know what earl to do. Can someone help me please: thanks

 

Sounds like a relay or possibly wiring is having problems.

 

Any ideal what relay I should check