Harness at Brake Reservoir/Master Cylinder

[shockseals.com]

There is a large harness that is a ford part that has been installed between the plug and the switch at the brake master cylinder. Was this some sort of recall fix? Loom is pretty big but connnects in like a factory recall should. It has a note about a fusible link in it that is not replaceable. Anybody know what this is?

1996, 5.8. All services done at dealer...I found one receipt for a brake recall that mentioned adding a wire but doesnt explain where or what for.

[shockseals.com]

found it...
The underhood Speed Control Deactivation Switch (SCDS) may overheat, smoke, or burn, which could result in an underhood fire. The potential for a fire exists regardless of whether speed control is being used or the engine is running. It was determined that the 2002 model year E550 vehicles and certain 2003 model year vehicles, included in this supplement, were built with the same speed control system configuration as 2002 model year vehicles included in the previous recall population.
SERVICE ACTION

At no charge to the vehicle owner, dealers are to:
Disconnect Speed Control Deactivation Switch wiring harness connector and check the connector for presence of brake fluid contamination on all affected vehicles.
If the Speed Control Deactivation Switch electrical connector is not contaminated with brake fluid: Install the Fused Jumper Harness.
If the Speed Control Deactivation Switch electrical connector is contaminated with brake fluid: Using compressed shop air, blow dry the Speed Control Servo electrical connector and the speed control switch harness connector. Apply Electrical Grease II to the servo connector and to the speed control switch adapter jumper harness male pin connector. Install the Brake Repair Kit (Speed Control Deactivation Switch Kit).

Repair Process For All Vehicles Involved in Recall 05S28