Trying to connect center negative daisy chain to jacks

I'm trying to connect these two wires, cause the right angle jacks don't have a center negative connector cause they came with a pedal board and it plugs into the board. I'm a bit confused about how to connect them.

http://img340.imageshack.us/img340/8454/wiresn.jpg

The multimeter tells me that the uninsulated wire is negative and the black wire positive, but shouldn't it be positive since the plug is centre negative? But then it tells me that red is positive and black is negative on the other wire, which is correct, so I am confused.

The way you're saying it makes it sound like you don't understand that the power supply is the source and determines polarity. I don't know what you're trying to do, but just make sure that the pedals are not given 'reverse' power, otherwise it's probably ok.

Yeah, you have to be a bit more specific about what you want to achieve.

Which one has the centre negative, the angled or the normal plug?

Do you want to connect pedals that have different power supply polarities with one daisy chain?

The one on the right, the normal plug, is the end of a pedal daisy chain that you plug the wall wart into. I don't know if that is centre negative or positive, but the multimeter tells me the polarities I put in the picture right down the bottom.

The one on the left is from a pedal board. The bit I cut off was just another one of the same right angle plugs. It plugs into the top of the board, and then a centre negative goes into the board as well and powers it - http://cachepe.samedaymusic.com/media/quality,85/brand,sameday/PB1000-4bbdbff20fbea3ec73f0f220386530b4.jpg (top left corner). I want to make it like a normal daisy chain.

Disregard my first post because I was confused with terminology. The picture below is how I wired it, but it didn't work...

http://img39.imageshack.us/img39/5200/kk1bb.jpg

...I might be reading this wrong... but in essence you want to turn the series wire(s) into a parallel wire(s)? It's possible... but tedious, and would be hell o' ugly at the end.

This is... if I'm understanding this all correctly.

The wall wart should have something on it that tells you if it's center - or +.

It'll be a circular looking thing. Look all over for it. I've yet to see one that doesn't tell you what it is. Once that's determined an ohm meter will tell you the rest.