2000 ford f150 makes a wining sound even after truck is turned off. to stop noise you have to take off one of the battery cables.

If you use your nose, you can smell where the problem is coming from. Just start sniffing, and locate the general winey smelling area. If it is a smaller part wining, you may need to taste the part along with some cheese and crackers to verify the wine. Once you have identified the suspect component, either start swapping parts and smell and taste the wine again or take the vehicle to a mechanic for a proper diagnosis and repair. Either way, you will eventually find the problem.