that is how I have seen them ran from a separate TEC PSU --like the samlex external PSUs.

the + & - were connected to the corresponding + & - on the vapo and the bottom 3 were jumpered with a new set of wires.

by jumpered - I mean the bottom 3 pins were essentially wired together. in one case, the bottom 3 were connected with a solid piece of copper.

still, I dunno what the long term effects of this might be on the system -- I was planning on run this by a a/c repair guy but I haven't had a chance to talk to him recently.