Hi everyone, new to the forum today so bear with me!

I have a Passat TDI 1.9 2002 sport estate that i have had since 2007.

I am struggling to locate the compressor relay(?).
I have a lot of vehicle experience (former mechanic and service manager for VW/Audi, Mercedes Benz /Nissan/ RR/Aston Martin) so you would think i'd be able to find it! But i'm 80 yrs old now and my eyes and memory aren't what they used to be

I have no power to the compressor when the air conditioning is switched on. (The system has been regassed sufficiently & no leaks on testing)
If i feed the compressor directly, it works.
Is there a relay? Where is it? And what is the number?
I purchased a 384 relay but i think this is an error as a) i can't find one on my car and b) researching this issue suggests the relays are different for "climatronic" vers "air conditioning"?

If anyone out there can help i would really appreciate it as its getting a bit warm.