SG pickup too low on volume

[cooljuk]

today I 'll buy a new battery for the multimeter and I will try again. I used the tip of the pencil inside each of the quick connect pin. is it wrong?

Be sure the tip of the probes and the contacts on the molex connections are also clean.

Resistance readings that jump around on a pickup are a sign of damaged pickup but it would be extremely unlikely for both of your pickups to become damaged in that same way at the same time. That's why I suggested it was your meter or technique.

 

[cousingrandpa]

You could just need some DeoxIT D5 so you can do a little contact cleaning. The non solder contacts can get oxidation which needs to be cleaned. If you unplugged then replugged your pickups to the circuit & it started working properly it could be something this simple. It's the same with pedal boards, every now & then you need to clean the cable contacts for the same reason, preventative maintenance.