I am having a hard time finding the above cord. I thought I had one as backup that was supposed to be the correct one but the 8mm connector does not look right. It has a piece on it that stops it from inserting all the way. If anyone has a link to Amazon preferably I would really appreciate it. I would prefer one that is 12 gauge if possible. Thank you in advance. I did a search here and did not come across this also.