Ok, thanks, should I attach my wire to the side of the fuse that is hot, even thought the fuse blows? or to the other side, when the fuse blows the truck won't run? Do I need to make sure the "wire" is hot when the ign switch is in the "start" position? It seems that some systems go down when the starter is engaged on some cars, is that the case on these old fords? Thank you, Randy