Voodoo Lab Pedal Power 2 Plus User Manual page 6

Connections
The Voodoo Lab Pedal Power has eight DC output jacks. These
accept barrel type connectors. Notice that each of your DC power
cables have a barrel connector on at least one end. The other end has
either another identical barrel connector (6 supplied), a 5.5x2.5mm
RED barrel (2), a 3.5mm mini-plug (1), or a battery snap (1).
Use the standard barrel connector cables with Boss, newer DOD,
Ibanez and Voodoo Lab pedals. If you have a pedal from another
manufacturer which appears to use the same connector, you must
verify that the polarity is "center negative" to prevent damage to the
pedal. This is the standard polarity and virtually all pedals are wired
this way. Exceptions are the Fulltone '69, SoulBender, and Octafuzz
pedals and Big Briar Moogerfoogers, which have their power jacks
wired for "center positive". If you have these or other pedals which
require reversed polarity, see "More About Cables" below.
Boss Twin pedals, like the DD-20, use the standard barrel connector
cables from outputs 5 and 6 only. Keep the corresponding switch in
the "NORMAL" position.
Use the cables with 3.5mm mini plugs for Dunlop, MXR reissue
and some older Voodoo Lab pedals. When using pedals of another
manufacturer, you must verify that the polarity is "tip positive".
This is the standard polarity for pedals which use the 3.5mm mini
plug for power. If you have a pedal with reversed polarity, see
"More About Cables" below.
Line6 modeling pedals (not Tone Core), like the DL4, use the
RED 5.5x2.5mm barrel from outputs 5 or 6 only. Remember to set
the corresponding switch to the "ON" position.
If you have a pedal which has no power jack at all, but it runs on a
single 9V battery, you can still power it using your Voodoo Lab
Pedal Power. Use the cable with the 9V battery snap on one end.