Need the help of some electrical wizards

[Canadian]

I didn't do anything unusual to the float switch. I'll take some pictures some time after work this afternoon so it's clearer what I've done. I'm still leaning towards one of the spliced joints I made being a poor connection so I'm going to take all my joints apart and solder them and then reapply the heat shrink tubing tonight. But I'll post pics of where things are at now so I can get some feedback before I screw something else up.