Yes, I've found already with my limited experience that any little oddball thing can make a mess of things - when I first put the new harness in, I had a glitch because one of the pot lugs (or perhaps it was a stray strand of wire) made contact with the shielding paint and caused a short...
"GAS never sleeps" - Gil Janus
"Now you got to pay your dues. Get that axe and play the blues." - Spudman
Gear: Epiphone Sheraton II, Epiphone Wildkat, Epiphone Emperor Joe Pass, Fender MIM Strat, Tacoma DR-14, Johnson JR-200 resonator; Fender Super Champ XD amp