Re: BA Electrical dramas need help
I agree that there must be a wire or something likely grounding somewhere. Why Ford service replaced the computer twice has got me worried. I would argue about paying the full costs of that if it never cured the problem.
Perhaps you may be better going to a reputable auto Electrician for checking and advice on this as they may be far more able to deal with it than your local Ford service centre by the sounds of this.
71 429SCJ Mustang