Trouble with underhood harness with HEI conversion

[WIDESIDE72]

A while back i bought a new underhood harness for my 72 as the old one was a rats nest. Since i was planning on going with HEI, i bought a harness that is supposed to be "plug and play" from Brothers. I started the truck maybe twide then tore it apart for paint, having never actually driven it. I am putting the teuck back together and reinstalled the harness. I started the teuck fine and drive it about 100 yards and it quit. I checked and have 12 volts at the pink power wire plugged in to rhe dist with key on not cranking. When cranking it drps to 8-9 volts. I had to unplug the pink wire at the dist and hook a hot wire from the battery to the dist to get it to run. Why am i losing voltage at a spot i figured they had researched as having adequate voltage at cranking?!?! On the underhood connector it comes from the far left side second from top.
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