How do you replace the alternator on a 1989 Mercury Cougar?
You can replace the alternator on your 1989 Mercury Cougar by removing the alternator belt. Disconnect the wiring harness from the back of the alternator. Remove the alternator retaining bolts. Reverse the process to install the new alternator.
Not sure if 1991 and 1989 is same Not sure if the alternator is under your right front seat on a 1989 model, but it is on 1991. You need to remove the seat and the top under the seat to get proper access. When that is done, it is easy removal of the alternator. You will see that the alternator is self explainable.