Okay it might not save your life, but it'll save you (or someone else) some time. I recently picked up a nice guitar from the sale forum here and when I received it the bridge pickup was not working properly. It would cut out and so I would have to shake the guitar to get the wires (I strongly assumed at that point it was the wires) in their proper position. Being the tinkering person I was I unscrewed the back plate to find this... I was surprised to find the wiring lacked any solder and the ground wires were...simply twisted together. This was quite a red flag and I knew I was gonna have to rewire this to avoid loss of playing time. So out this went and in goes this stuff I bought the guitar knowing it had a non-working neck pickup, so I did my best to rectify that, but no good came out of the work. I'll have to read up more on how four conductor cable humbucker works, so hopefully I'll win out on my purchase. So after about 40 minutes I'm left with this solid working wiring job Not the best job, but not the worst. Please guys, if you're gonna make some DIY mods to your guitar, have the proper tools and know/read up on the procedures. Removing and wiring pickups/pots is fairly easy. If not, consult your local guitar tech. And if your tech blows , you're better off having the knowledge to properly wire yourself.