Did you guys find a suitable solution to this issue?
I did not see anyone mention if this was the 4 pin or 6 pin cable.
There’s a guy on etsy - Joshua Cunningham, that sells a 4 pin straight through extension cable that works with an AMS to extend the 4 pin cable. I have one, it works.
I can suggest, with his blessing that you reach out to him about your requirement. He’s reasonable priced too.