Rookie Tackling DC Power Plug

[John Griffing]

I have a Belkin AC Anywhere device that converts automotive DC power to AC
to run different devices. The DC plug-in has worn out, so I decided to try
the repair myself rather than replace the device. My problem - how do I know
which wire from the inverter is positive and which is negative to attach the
plug correctly? The replacement plug is conveniently labeled with +/-, but
the folks at Belkin haven't offered anything in the way of labels, on-line
manuals or support for me to know which of the two wires to attach into the
slots.

I can actually remove the plate on the front and back of the inverter to see
inside. One of the two wires attaches to the circuit board next to the
letters "GND" and the other goes to the on/off switch.

Thanks to anyone who can help me.

 

[Uns Lider]

inside. One of the two wires attaches to the circuit board next to the
letters "GND" and the other goes to the on/off switch.

GND is the negative.

Be sure that your replacement connector can handle the same current as the
original. If the original had a fuse built in, also make sure the
replacement has the same fuse.

-- uns

 

[Dan Sofie]

John Griffing:
Trace the wire visually or with a continuity meter from the center pin
of the cigarette lighter plug.... this will be the positive (+) wire
and more than likely this is the wire that goes to the switch. The
"ground" wire is probably the negative (-) connection.
If you are still not completely certain about the polarity of the
connections you might be best advised to take your device to a service
shop technician for a hands-on opinion.
Best Regards,
Daniel Sofie
Electronics Supply & Repair