A short will kill the GP, they don't like too much current. So will not having the total resistance right, you did put the "wires" between the plugs back the same way they were, right? If you leave one of the resistor (zig-zag) links out, you will burn the GPs off, they get too hot.

If the fuse holder melted, I'd bet you have something intermittantly shorting out the GP system along the way, probably right after #4.

A bad injector can also burn off the loop by shooting out a solid stream of fuel rather than the proper cone of fuel mist -- they can spray almost sideways when really worn.

Peter

__________________
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!