CE-680A Technician reported while troubleshooting a toilet that would not flush; found wiring and connector to flush motor not installed correctly.

Narrative

Aircraft X arrived in ZZZ with a lavatory squawk. The toilet would not flush. Upon removing the toilet seat I discovered the toilet flush timer mount hardware barely installed and loose; the wiring was not routed correctly and wiring clamps were not installed; and the connectors to the flush motor were not properly connected. The insulation was stripped away and the connectors were loose and there was just a loose unshrunk piece of heat shrink covering the metal connectors. The connectors were loose and were causing an intermittent fault. The aircraft had just come out of maintenance at another location for changing the toilet flush timer.Suggestions: The poor adherence to wiring standard practices not only caused a intermittent fault; It also posed a electrical/fire hazard. The maintenance was clearly not inspected by other personnel and this allowed all of the above defects in maintenance to be passed up and the aircraft put back into service in a faulty potentially unsafe condition. One is reminded of an old incident from a flight that experienced an inflight fire most likely caused by wire arcing in the lavatory. We as licensed Technicians; must constantly be reminded of past disasters so as to remain ever vigilant of the severity of our jobs and the tasks at hand. To send an aircraft off with any maintenance performed haphazardly is nothing short of a failure of our duties as FAA licensed A&P Technicians.