Portable speakers / Speakers on battery

Step 4: Connecting the wires

Now cut the 2 wires that are leading to your electric board. Strip them.

Mostly, the left one (the first one) is + and the right one is -.
You also can check it using the volt meter.

Now mark your + and take the 9v connector, the red one is + and the black one is -.
Solder them together.

Then take some tape (I didn't find my electric tape, but duck tape will do the job ;) and wrap it around the place where the cables were soldered.

Comments

[Arano]

those 2 wires are both + and -... the 4 diodes in the up/left corner are a rectifier so you cant wire a batterie to those wires in a wrong way