Help finishing off s3 conversion

[aa_autos]

Hi peeps,
Sorry if I'm posting this in the wrong place.
I've nearly completed my facelift s3 conversion I just need help completing a few things on the car. The main thing is wiring up the headlights/ rear lights and the electric seats.
Can anyone point me in the right direction in where I can get this done or if anyone on the forum may help?

Thanks in advance