Need some wiring help........

[GTI]

I have a routed track that has the BLST flippers. I run AC2Car. So I need to supply a 12 volt 1 amp power supply to the flippers DC. See attached wallwart that I plan to use and plug into the track. How do i figure which to solder the positive and negative wires to the adapter??



Thank you for your help.


Happy New Year to everyone!

[Tycosaur]

The adapter should have a image by the output rating, ground - and positive +. Usually, the outside is ground and the center is positive.

[WB2]

That’s a universal power supply. The jack is a separate piece. Polarity is determined by how jack is installed.
There is a diagram on the back of the supply that corresponds to the two pin female cord plug.

[WB2]

SWAG would tell me the conductor with the long black stripes on it would be positive.
It’s common for the identified wire to be positive.

In your second photo, there is a “ - “ on the jack. Which conductor does it line up with?

Do you have a multimeter?

[GTI]

I don't have a multimeter. So the adapter is a plug-in piece on the universal power supply. The jack didn't have a diagram or anything to refer to. So that is why I'm hoping someone would know that the center is + or - and the outside or longer piece would of course be the other. It seems that the Tycosaur indicated this by saying the inner connection would be + and the outer the ground? That's what I'm trying to determine to hook up.

Thank you

[4424ever]

Never mind

[WB2]

OK, not the best photos.
This is a similar power supply sold under a different name.


Backside showing wiring diagram and cord with jack removed.

Note the gray band. There is a diagram on the right hand side.
The end view shows + and -. Next to it is the cord, showing the word ‘TIP’. That’s to index the cord end to the diagram.
On mine, using that diagram, the + connection lines up with the wire with the dark stripes running the length of the cord.

[GTI]

Yes, mine is the same. So the jack is what I'm concerned about. Do I solder the + to the center or outer point.

[GTI]

So I found this, if the tip and the + line up then the connection is +inner and -outer. If the tip and the - line up then the jack is the opposite. the inner is - and the outer is positive.

[WB2]

You’ve got it.
Sorry, I thought you wanted to cut the plug off the wire and solder it to the metal jack.
You’re wanting to plug the power supply into the panel jack, correct?

[GTI]

Yes, Thank you for your help.