Assuming you did need coding, there are plenty of member with VCDS that are happy to do coding if required, it'll just depend where in England you are to who is local
Anyway, I assume you're still trying to use the TEB7AS mentioned in your other thread? Not sure what the other module you've tried is?
In which case, it seems others have had it working on a MK2 Octavia:
- https://www.briskoda.net/forums/topic/209000-tow-bar-bypass-relay-wiring/?do=findComment&comment=2470657
- https://www.briskoda.net/forums/topic/179204-mkii-fog-light/?do=findComment&comment=2155362
I'd wire it up as:
- Yellow, left indicator
- Green, right indicator
- Red, brake light (either side)
- Blue, fog light (drivers side as stock cars only have one side enabled)
- Grey, reverse light (either side)
- Black, securely taped up
- Brown, securely taped up
- White, a good clean earth point!
You've not mentioned if you're using a single 7 pin (12N), dual 7 pin (12N+12S) or a 13 pin socket.
Therefore, I'd suggest you use the screw terminals on the TEB7AS to check which are getting power.
Colours based from this PDF: http://www.towbarsdirect.co.uk/images/M7-WK7.pdf