2 x 4.5 volt units, and 1 x 9 volt DC power block
As the title says, I have two 4.5 volt LED light strips (each one originally ran off 3x1.5 AA batteries). Can I use one 9 volt AC-to-DC power supply (wall wart type) to power these?
If so, do I wire these lights in series, or parallel?
Is this a good question?