that white and blue stripe wire is off the grey ecc relay next to fuel pump relay?(not positive which one is which)

any way the thick red wire through the steering column is tapped into with a wire and a fuse then runs to the white and blue stripe a couple inches behind the grey relay right into that white and blue stripe.

I had that disconnected and got no fuel pressure when it wasnt on there.


Seems llike some quick fix by a previous owner? any input as It was okay before with it this way I just have installed another 4.9 and double checked everything like fuel pressure and getting ready to test fire it just curious what to do here?

87 f150 4.9 c6 for the most part all electrical is pretty sanitary other than that random hot wire tapped in

 

Sounds like a wire in the harness broke somewhere, and the previous owner didn't want to deal with it, so he ran a new one.