Peter:

Definitely get the front rotors checked. I am willing to bet that they are badly warped. After all they do most of the braking. If a judder persists after ALL FOUR rotors have been replaced, then you need to delve into the electronics, and wiring. Let us know what happens.

Additional note from author:

It is very important that reassembly of the disc brake components be precise and exact. All surfaces must be clean of grime and dirt, and that final tightening be performed with a torque wrench. DO NOT USE AN AIR-TOOL for reassembly. Use it only for disassembly. Also be extra careful not to kink any hydraulic pipes.

To the owner of the Ford Falcon:

As I mentioned in my essay, it looks to be warped disc brake rotors. If you are nervous about doing it yourself or lack the proper tools, take it to a licensed brake shop that you can trust, and ask them to perform a “run-out” test on each disc rotor. If any of them are warped, it is safest to replace them rather than have them machine the originals.

A frequent cause of rotor warp is hard braking. These invariably leads to overheating and warpage.

PS from author

I am sure that my method outlined above is not original, and has been written up somewere else. What I can vouch for, is that I have performed this test on my 1993 Volvo 240 wagon with over 200K miles.. Its brakes had been pulsating for some time, and after checking the ABS electric components exhaustively; it was only after replacing all four original disc rotors, that the pulsations disappeared. The front pair of rotors had 1.5mm ridges, were replaced first, with most of the pulsations gone. However, there were still minor ones, which disappeared once the rears were replaced. Theoretically, turning the rotors on a lathe could have removed the warp, but then the discs would would be thinner, and more susceptible to thermal distortion. I recommended that this kind of work be performed in a licensed brake shop, simply because not all readers have the proper tools or training to do such critical work in a home garage. Failure to securely remount the calipers could result in severe injury.

Very nice presentation, with excellent photos.

Caution in pulling the power button cable and power-on LED cable off the motherboard. DO NOT TWIST. They are supposed to lift straight out if you believe the Apple tech manuals. Mine would not budge will gentle pull, then broke when the pull was increased a little.