Help me Please -electronically illiterate person attempting things he shouldn't

[gbradtke]

Help needed please- I have commenced a pickup swap in my silo special SSS. I am trying out some Custom Shop '69s I had in the cupboard.
I have switched over the pickups replacing them exactly as per the original wiring but somewhere along the line I have lost the neck pickup. I have gone over all the connections and they seem ok.
One of the switch terminals is a little loose, but wriggling it doesn't make a difference.
I don't really know where to go from here. Any advice anyone?
How do I test if the pickup itself is faulty?
I have a multi meter, but really no clue as to what to do with it.

[threeminutesboy]

Extremly hard to evaluate the problem from so far, but, if you only swaped the pup you have only 2 solder to check. I will try to post some photos to show you where to check

[Larry]

Pictures?

We'll get this sorted for you

[gbradtke]

Thanks guys
I kept tinkering and I summise that it must be a bad solder joint, or possibly a short that occured (possibly one of the pickup wires under tension) when I re-installed the guard.
It may even have been a small piece of solder drip or wire offcut that fell into the switch.
I do have the guard back in the guitar and the neck pickup functioning now, but I can't say I definitively got to the bottom of the problem.
I guess if it re-occurs I will have to re-do each joint to be sure.
I didn't take any pics (don't want you blokes laughing at my soldering skills).