Need some info. got a 1998 f250 with 7.3l
no power to key on side of the pcm relay at power dist. box
will not start and no com. with scanner followed the wire inside of cab
does anybody out there have a diagram for
this circuit or know were this wire comes from? I believe it should
be a 12 volt signal with key on any help would b
appreciated

 

Welcome to the site..

Fuse for the power relay is in the engine comparment box. #22-30 amp..

If the fuse is blown, or continues to burn, unplug the fuel heater, they like to take out the Power relay feed...