PCM Fuse Problem - Blows at Key On | Mustang Forums at 2) My fuse box is a 99+ fuse box. 3) The fuse being blown is #26 -- it blows as soon as you turn the key to on position 4) I've unplugged the CCRM and the fuse lasted. Plugged back in - pop. 5) I'd really like to trace the short myself, but not exactly sure where all to look 6) I've unplugged all of the O2 sensors and the short is still there. ️ ️Ford Mustang How to Find and Replace A Blown Fuse Click to view on Bing7:55️ ️Do you have a Blown or burnt fuse in Ford Mustang, I going to show how to quickly find and replace the correct fuse fast and accurately. ️How To EASILY Skip navigation Does your 05-06 Mustang Needs a NEW Author: RANDOMFIXViews: 10K Fuse Box Melted | Ford Forums Fuse Box Melted. Jump ay,the other day the fan stopped working and I checked the fuses in the engine compartment and the H270 large fuse/relay melted and when I replaced the fuse,it would'nt come back on Ford Forum is a community to discuss all things Ford. Check out our discussions on the Ford Escape, Mustang, Edge, F-150 Wire under fusebox burned fuse melted 2003 Ford Focus 20.. A wire shorted Inside the fusebox under the hood causing another wire that I believe runs the fuel pump to burn from the fusebox to under the glovebox and the fuse to that wire was also burned so bad it melted it also damaged other wires in the cluster of wires inside fusebox and along the wiring harness I'm sure the whole wiring harness will Headlight switch wiring diagram for 2003 mustang gt - Fixya I f you've checked your fuses/fusible links then it's most likely the headlight switch is shot/melted on the backside of switch. A diagram of a 2003 Ford Mustang interior fuse box? 2003 Ford Mustang. 1 Answer I need a fuse box diagram for a 2008 ford mustang. 2008 Ford Mustang. 1 Answer Firing order diagram for a 289 motor.