Pac brake

[mydogmax]

What do the components look like on a pac/ehaust brake, mine blows the stoplight fuse and looking for a short.

[Timaz]

My pac-brake switch is on the floor like an old style headlight dimmer. Do you have the same? There is an air operated ram that opens and closes the butterfly on my unit right at the back of the turbo. I'm not sure if it operates through a relay or not.

[jacwjames]

I just looked at a brochure for a 2005 Windsor and it indicates you should have a 2 stage Jacobs Brake which is internal to the engine. Somehow/somewhere this is a relay that is activating the Jacobs brake and also sending a signal to the brake light. You'll have to trace the wires to try and find it.