thanks for the help! probably the easiest would be the jamma connection to the iPac. i don't mind re-wiring but these are just so nicely run and out of the way, felt it would be a shame to cut into them. I have a second one that i will be totally rewiring but this one is seemed a waste to cut them up. thanks again!
I think i will just rip out the old power supply and put a standard plug fluorescent light in the marquee and just use a power strip. Better safe than sorry using an old power supply.