Where is located the fusible link in a f350 2004 6.0 diesel

There is no fusible link. Locate "Fuse B" 120 AMP located in the battery junction box located at front left corner of engine compartment. With engine off, key off, both sides of the fuse should measure +Battery Voltage. Reference negative post for testing.

It looks like one battery has 2 cables coming off the positive post one wire goes to the other battery while the other goes to a junction block there are 2 fuse links coming out of that junction box. I hope this helps. Take care.

• Hi Louis Clark, Not sure if the e250 is similar but the fuse panel for this model is at the front left side of engine bay
  look at the video as the guy is playing around with the fuses and you can see the fuse box location on the video https://www.youtube.com/watch?v=6gVpYTuF...
  
  
  pcm is position 4https://www.justanswer.com/ford/1vfz1-19...
• https://www.carcarekiosk.com/video/2005_...
  

You will burn the fusible links ,all the best.

sounds like you have a faulty ignition switch or a burnt fusible link(located on the right fender next to the battery).

They will be on the battery side connection,of the starter solenoid switch,on the firewall.

the only fuse for the starter is not located in the fuse box it is located in the positive wires that go to the starter its called a fusible link and when then amperage of the starter exceeds the fusible link rating the fusible link blows the link is usually located inthe positive wire to the starter and at some point fatter then the wire itself

Look for a fusible link that has gone bad. If you are not familiar with this please read some before you explore. The 'fusible link' from a distance looks like any other wire but on close exam it is rubbery and some what stretchy as well. There are several wires coming from the solenoid so be careful and pull gently on each one until you find the one that feels stretchy. Try and find an obvious 'burn' area and or a total split in the line. I hope this helps.
Again be sure to read some on fusible links.

Here is a generic pic of some fusible links - so you know they look just like a regular wire but their sheath is different as in more stretchy :
http://www.eldorado-seville.com/assets/fusible_link_BG_MG_8665.jpg

Best of it.

this link may help you guys. You'll have to check a few to find what you need but I suspect, if you can interpret the drawings, you'll narrow it down, otherwise take a copy to your mechanic, and it might help him.
( http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c1528004d7c3 )