i have a 89 lincoln markvii and am new to the forums and have a bunch of stuff wrong with my mark. Brakes being a big problem. i read in a tech article that the abs controller/ hydrobooster has a relay that is sometimes faulty, or even its contacts are dirty and causesthe problem of intermittent brakes, which is the problem i am having. Where is this relay located and/ or what else could i do to fix this problem? i have already bled the fronts and 1 of the backs but thanks to the super duper wheel locks that refuse to give up i cant free up the driver side rear wheel. whats next?