I had an Icom 21A radio on the bench, and no power cable to test it with, so after some research I put together a replacement AC cable for the Icom. It fit and worked as expected. The Icom DV21 VFO also uses the same cable. Word of caution: I have used this ONLY with the IC21A and the DV21, so don't assume this will work on any other Icom unit. It may, but remembering that Murphy's Law is real, I wouldn't risk trying it without doing your own research.

One more caution: READ the disclaimer at the front of the video, and take heed. I am not a professional radio repair guy, and anything I show you in this video is for informational purposes only. I am NOT encouraging you to build a cable like this and stick it in your radio, I'm just showing you what worked for me. (Maybe this will be of help to you if you need a cable. If not, then remember the video was free, and you got what you paid for.)
If you need a 6 pin Molex connector, they are usually in stock at FatCat.Parts.