I'd like to say it was for a model loco, but it's actually my central heating boiler. The switch which detects that the domestic hot water tap has been switched on is playing up, (or I think that's the problem). I've taken it off and put it back on, and the issue seems to have gone away, but it was intermittent before. I'd like to be able to monitor what's going on in situ, so I want a bit of wire with male/female connectors like the one in the photo so I can have a test point part way along. Anyone know what I should search for? as usual I have loads of connectors which look very like it but don't fit.
If I cant find anything I'll just cut the wire and insert something, but I'm trying to be less brutal to start with