Remmelt writes – “This is a yellow lead with two alligator clips on the ends. It has a 15K Ohm 5W resistor in the middle, made somewhat pretty and lots more safe with shrinktube. It functions as a capacitor discharging line: one end on the + side, the other on the -. Wait, done. I use it in my guitar tube amp; the capacitors are rated 450 Volt DC (very dangerous).” – Link (Champ replica).