i need a PCIe to molex adapter, not the other way around, i know they exist because i saw one i’m just having some trouble tracking it down. So if anyone knows of where i could pick on up that would be great thanks.
Might this be of use to you then…
Awsome, kinda, lol, yeah that will work for a last resort, but i know that there are adapters that are the opposite of the two molex to PCIe, its PCIe to two, which would be ideal, as there would be more molex connectors no waiste 
Now that i think about it, it was some power supply manufacture who made the adapter, but i think it was like an odd company, or more so an unpopular
Hmm ok so why not just stick a molex splitter on the end?!
good point, didn’t really think of that, i guess that would work, yeah but then again, there would be a lot of resistance there and i’m using this for a HDD, so that said, it would probably be a good idea to just use the single anyways, as i would for sure get good voltage and then look around for the other one.
So you’re sorted then! 
You wouldn’t happen to know where i could get one here in the UK would you?