the only hole I can see is in the bottom of the fan housing, but I can't see if it goes all the way through ;D
it should run through in a tube at a slight angle be carefull if you get it stuck it a nightmare had to cut mine once
My acc tube has a nasty habit of sliding forward but just behind that is the hole it goes up on a angle and out thru your rear tin
Quick fix mate, jubilee clip or cable tie around the back of the fan housing, it stops it moving outwards and is easy to fit. ;D
On a separate note, we couldn't get our cable through so i tried a coat hanger from the front and that wouldn't work either. I got annoyed and pushed the coat hanger hard and it went through allowing is the tape the cable to the coat hanger and pull it through slowly.
I am going to use that liquid metal stuff next time engine out It all ways done it I've tried that before even fitted the proper grommets before and it always comes forward just annoyance really just posted the photo as jokers seems to struggling to get it in the hole