Hi.
The power locks on my car are failing to lock/unlock intermittently. They do occasionally work, but most often do not. When they do work, all of them work.
If it's very quiet, I think I can hear a solenoid or relay clicking after I flip the master lock/unlock lever even when the locks don't work. So, I think at least part of the circuit is working, eliminating the master switch itself from being the problem.
Where should I start looking for faulty wiring?