Remote central locking help needed

[Aaronm067]

Ok so I’m hoping I can get some help with this,
Currently in my A3 8L I have central locking pump with the code 8L0 xxx xxx “L” prefix (non radio remote) installed. I would like to have remote locking so I have ordered a pump with prefix 8L0 xxx xxx “G” (radio remote function) and match up my key (I got when I bought the car privately, 3 button key btw) which has the part number 4D0 837 231 N via soft coding on VCDS.

My problem is that I don’t seem to have pins 1 & 7 in plug C (black plug in CL Pump) for the aerial/remote antenna.

Can I buy this part and fit it in the plug etc?

Any help would be great! Thanks