Hey guys new here, I need help tracking down a harness part number. The harness in need is the one that connects to the Central Junction box, then out to 4 plugs through the fire wall.

 

Can we inquire why you need to replace the one in there?

 

If I lift up on the harness near the rear of the junction box my pcm and fuel pump come on and I can start the truck if I don't lift up on it no power to fuel pump and forscan won't connect to pcm.

 

Here is how you repair this.

Carefully,,,,,,,,,,,,,,slice the covering in the area where you move it to make the connection,
Now you have an idea where the break is located.
Then you watch which wire you carefully move that makes and breaks the connection.
Try to single out that wire from the rest and pull on it . That will confirm your finding. Then cut out that section (about 3-4 inches, ) and insert a jumper wire in it's place to confirm you got the correct section. If you now have constant power available , just complete the splice and seal it with some liquid tape . After that you can use regular electrical tape to complete the repair. This can be pretty easy to do . A lot easier than replacing an entire harness, What do you think?