I'm a fan of just touching the wire right to the cap. See this way, you don't have to actually connect the wire. It automatically welds it self to it when the cap draws thousands of amps for a split second
Ok, I don't do it that way, But I did once weld a #2 philips to a cap discharging it the 'fast" way. was something like 80,000uf 60v.
I only did that once... not due to safety reasons but cause I like to keep my tools.