Center Positive to Center Negative Power.

[pjones78]

Probably a dumb question, and its probably been answered before.
Is it possible  to change power plugs on pedals from a center positive to a center negative with out
trashing the pedal? Is it as simple as adding the center negative plug  to the effect and just soldering wires
back on to it backwards?

[thermionix]

Just flip the wires unless you need a different size.

[Rob Strand]

Things to watch out for:
- the battery switching. 
- if the jack isn't isolated.

[zombiwoof]

If your pedal has a 1/8" positive tip jack, don't mod the pedal, just get one of these converter cables:

http://www.ebay.com/itm/Visual-Sound-3-5-Milimeter-1-SPOT-Converter/131687129518?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D2%26asc%3D38530%26meid%3De4ac1a543516413d968de966022f13de%26pid%3D100005%26rk%3D1%26rkt%3D6%26sd%3D332047053319

They also have them for pedals with positive ground 2.1mm jacks to reverse the polarity, using your regular power supply.  Other companies also make them.  I have a bunch of them for my older DOD, RAT, etc. pedals with 1/8" pos tip power jacks.

Al

Probably a dumb question, and its probably been answered before.
Is it possible  to change power plugs on pedals from a center positive to a center negative with out
trashing the pedal? Is it as simple as adding the center negative plug  to the effect and just soldering wires
back on to it backwards?