Whats this for ?
 

I have a 2002 b 3000 with the abs light on.Yesterday I found a inline fuse (aftermarket) right next to the master cylinder zip tied to the wiring harness to the master cylinder . I popped I out of the zip tie and checked the fuse It had a 2amp fuse in it and It appeared ok . Haven't traced the wires yet to see where it goes yet , thought someone here would have an Idea what this was installed here for ?