Instruction Manual
Page 21
...MP6212 TROUBLESHOOTING Problem Does not operate (display does not light) No power to unit No speakers operate (display lights normally) Not all splices and connections Speaker wires shorting Check splices; check vehicle fuse with test light; no power to red wire Inline fuse blown Inline fuse blown Speaker harness... not connected Corrective Action Check connection with test light Replace fuse Check/replace fuse Connect speaker harness; check speaker wires Incorrect splices or connections Check all ...
...MP6212 TROUBLESHOOTING Problem Does not operate (display does not light) No power to unit No speakers operate (display lights normally) Not all splices and connections Speaker wires shorting Check splices; check vehicle fuse with test light; no power to red wire Inline fuse blown Inline fuse blown Speaker harness... not connected Corrective Action Check connection with test light Replace fuse Check/replace fuse Connect speaker harness; check speaker wires Incorrect splices or connections Check all ...